mpermann/policy-templates

Policy Templates for Firefox

These policies are in active development and so might contain changes that do not work with current versions of Firefox.

You should use the officially released versions (https://github.com/mozilla/policy-templates/releases) if you are deploying changes.

Policies can be specified using the Group Policy templates on Windows (https://github.com/mozilla/policy-templates/tree/master/windows), configuration profiles on macOS (https://github.com/mozilla/policy-templates/tree/master/mac), or by creating a file called policies.json. On Windows, create a directory called distribution where the EXE is located and place the file there. On Mac, the file goes into Firefox.app/Contents/Resources/distribution. On Linux, the file goes into firefox/distribution, where firefox is the installation directory for firefox, which varies by distribution.

Policy Name	Description
AppAutoUpdate	Enable or disable automatic application update.
AppUpdateURL	Change the URL for application update.
Authentication	Configure sites that support integrated authentication.
BlockAboutAddons	Block access to the Add-ons Manager (about:addons).
BlockAboutConfig	Block access to about:config.
BlockAboutProfiles	Block access to About Profiles (about:profiles).
BlockAboutSupport	Block access to Troubleshooting Information (about:support).
Bookmarks	Add bookmarks in either the bookmarks toolbar or menu.
CaptivePortal	Enable or disable the detection of captive portals.
Certificates
Certificates -> ImportEnterpriseRoots	Trust certificates that have been added to the operating system certificate store by a user or administrator.
Certificates -> Install	Install certificates into the Firefox certificate store.
Cookies	Configure cookie preferences.
DisableSetDesktopBackground	Remove the "Set As Desktop Background..." menuitem when right clicking on an image.
DisableMasterPasswordCreation	Remove the master password functionality.
DisableAppUpdate	Turn off application updates.
DisableBuiltinPDFViewer	Disable the built in PDF viewer.
DisabledCiphers	Disable ciphers.
DisableDefaultBrowserAgent	Prevent the default browser agent from taking any actions (Windows only).
DisableDeveloperTools	Remove access to all developer tools.
DisableFeedbackCommands	Disable the menus for reporting sites.
DisableFirefoxScreenshots	Remove access to Firefox Screenshots.
DisableFirefoxAccounts	Disable Firefox Accounts integration (Sync).
DisableFirefoxStudies	Disable Firefox studies (Shield).
DisableForgetButton	Disable the "Forget" button.
DisableFormHistory	Turn off saving information on web forms and the search bar.
DisablePocket	Remove Pocket in the Firefox UI.
DisablePrivateBrowsing	Remove access to private browsing.
DisablePasswordReveal	Do not allow passwords to be revealed in saved logins.
DisableProfileImport	Disables the "Import data from another browser" option in the bookmarks window.
DisableProfileRefresh	Disable the Refresh Firefox button on about:support and support.mozilla.org
DisableSafeMode	Disable safe mode within the browser.
DisableSecurityBypass	Prevent the user from bypassing security in certain cases.
DisableSystemAddonUpdate	Prevent system add-ons from being installed or update.
DisableTelemetry	DisableTelemetry
DisplayBookmarksToolbar	Set the initial state of the bookmarks toolbar.
DisplayMenuBar (Deprecated)	Set the initial state of the menubar.
DisplayMenuBar	Set the state of the menubar.
DNSOverHTTPS	Configure DNS over HTTPS.
DontCheckDefaultBrowser	Don't check if Firefox is the default browser at startup.
DefaultDownloadDirectory	Set the default download directory.
DownloadDirectory	Set and lock the download directory.
EnableTrackingProtection	Configure tracking protection.
EnterprisePoliciesEnabled	Enable policy support on macOS.
Extensions	Control the installation, uninstallation and locking of extensions.
ExtensionSettings	Manage all aspects of extensions.
ExtensionUpdate	Control extension updates.
FlashPlugin	Configure the default Flash plugin policy as well as origins for which Flash is allowed.
FirefoxHome	Customize the Firefox Home page.
HardwareAcceleration	Control hardware acceleration.
Homepage	Configure the default homepage and how Firefox starts.
InstallAddonsPermission	Configure the default extension install policy as well as origins for extension installs are allowed.
LegacyProfiles	Disable the feature enforcing a separate profile for each installation.
LocalFileLinks	Enable linking to local files by origin.
NetworkPrediction	Enable or disable network prediction (DNS prefetching).
NewTabPage	Enable or disable the New Tab page.
NoDefaultBookmarks	Disable the creation of default bookmarks.
OfferToSaveLogins	Control whether or not Firefox offers to save passwords.
OfferToSaveLoginsDefault	Set the default value for whether or not Firefox offers to save passwords.
OverrideFirstRunPage	Override the first run page.
OverridePostUpdatePage	Override the upgrade page.
PasswordManagerEnabled	Remove (some) access to the password manager.
Permissions	Set permissions associated with camera, microphone, location, and notifications.
PopupBlocking	Configure the default pop-up window policy as well as origins for which pop-up windows are allowed.
Preferences	Set and lock some preferences.
PromptForDownloadLocation	Ask where to save each file before downloading.
Proxy	Configure proxy settings.
RequestedLocales	Set the the list of requested locales for the application in order of preference.
SanitizeOnShutdown (All)	Clear all data on shutdown.
SanitizeOnShutdown (Selective)	Clear data on shutdown.
SearchBar	Set whether or not search bar is displayed.
SearchEngines
SearchEngines -> Default	Set the default search engine.
SearchEngines -> PreventInstalls	Prevent installing search engines from webpages.
SearchEngines -> Remove	Hide built-in search engines.
SearchEngines -> Add	Add new search engines.
SecurityDevices	Install PKCS #11 modules.
SearchSuggestEnabled	Enable search suggestions.
SSLVersionMax	Set and lock the maximum version of TLS.
SSLVersionMin	Set and lock the minimum version of TLS.
SupportMenu	Add a menuitem to the help menu for specifying support information.
UserMessaging	Don't show certain messages to the user.
WebsiteFilter	Block websites from being visited.

AppAutoUpdate

Enable or disable automatic application update.

If set to true, application updates are installed without user approval.

If set to false, application updates are downloaded but the user can choose when to install the update.

If you have disabled updates via DisableAppUpdate, this policy has no effect.

Compatibility: Firefox 75, Firefox ESR 68.7
CCK2 Equivalent: N/A
Preferences Affected: app.update.auto

Windows (GPO)

Software\Policies\Mozilla\Firefox\AppAutoUpdate = 0x1 | 0x0

macOS

<dict>
  <key>AppAutoUpdate</key>
  <true/> | <false/>
</dict>

policies.json

{
  "policies": {
    "AppAutoUpdate": true | false
  }
}

AppUpdateURL

Change the URL for application update.

Compatibility: Firefox 62, Firefox ESR 60.2
CCK2 Equivalent: N/A
Preferences Affected: app.update.url

Windows (GPO)

Software\Policies\Mozilla\Firefox\AppUpdateURL = "https://yoursite.com"

macOS

<dict>
  <key>AppUpdateURL</key>
  <string>https://yoursite.com</string>
</dict>

policies.json

{
  "policies": {
    "AppUpdateURL": "https://yoursite.com"
  }
}

Authentication

Configure sites that support integrated authentication.

See https://developer.mozilla.org/en-US/docs/Mozilla/Integrated_authentication for more information.

Compatibility: Firefox 60, Firefox ESR 60 (AllowNonFQDN added in 62/60.2, AllowProxies added in 70/68.2, Locked added in 71/68.3)
CCK2 Equivalent: N/A
Preferences Affected: network.negotiate-auth.trusted-uris,network.negotiate-auth.delegation-uris,network.automatic-ntlm-auth.trusted-uris,network.automatic-ntlm-auth.allow-non-fqdn,network.negotiate-auth.allow-non-fqdn,network.automatic-ntlm-auth.allow-proxies,network.negotiate-auth.allow-proxies

Windows (GPO)

Software\Policies\Mozilla\Firefox\Authentication\SPNEGO\1 = "mydomain.com"
Software\Policies\Mozilla\Firefox\Authentication\SPNEGO\2 = "https://myotherdomain.com"
Software\Policies\Mozilla\Firefox\Authentication\Delegated\1 = "mydomain.com"
Software\Policies\Mozilla\Firefox\Authentication\Delegated\2 = "https://myotherdomain.com"
Software\Policies\Mozilla\Firefox\Authentication\NTLM\1 = "mydomain.com"
Software\Policies\Mozilla\Firefox\Authentication\NTLM\2 = "https://myotherdomain.com"
Software\Policies\Mozilla\Firefox\Authentication\AllowNonFQDN\SPNEGO = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\Authentication\AllowNonFQDN\NTLM = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\Authentication\AllowProxies\SPNEGO = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\Authentication\AllowProxies\NTLM = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\Authentication\Locked = 0x1 | 0x0

macOS

<dict>
  <key>Authentication</key>
  <dict>
    <key>SPNEGO</key>
    <array>
      <string>mydomain.com</string>
      <string>https://myotherdomain.com</string>
    </array>
    <key>Delegated</key>
    <array>
      <string>mydomain.com</string>
      <string>https://myotherdomain.com</string>
    </array>
    <key>NTLM</key>
    <array>
      <string>mydomain.com</string>
      <string>https://myotherdomain.com</string>
    </array>
    <key>AllowNonFQDN</key>
      <dict>
      <key>SPNEGO</key>
      <true/> | <false/>
      <key>NTLM</key>
      <true/> | <false/>
    </dict>
    <key>AllowProxies</key>
      <dict>
      <key>SPNEGO</key>
      <true/> | <false/>
      <key>NTLM</key>
      <true/> | <false/>
    </dict>
    <key>Locked</key>
    <true/> | <false/>
  </dict>
</dict>

policies.json

{
  "policies": {
    "Authentication": {
      "SPNEGO": ["mydomain.com", "https://myotherdomain.com"],
      "Delegated": ["mydomain.com", "https://myotherdomain.com"],
      "NTLM": ["mydomain.com", "https://myotherdomain.com"],
      "AllowNonFQDN": {
        "SPNEGO": true | false,
        "NTLM": true | false
      },
      "AllowProxies": {
        "SPNEGO": true | false,
        "NTLM": true | false
      },
      "Locked": true | false
    }
  }
}

BlockAboutAddons

Block access to the Add-ons Manager (about:addons).

Compatibility: Firefox 60, Firefox ESR 60
CCK2 Equivalent: disableAddonsManager
Preferences Affected: N/A

Windows (GPO)

Software\Policies\Mozilla\Firefox\BlockAboutAddons = 0x1 | 0x0

macOS

<dict>
  <key>BlockAboutAddons</key>
  <true/> | <false/>
</dict>

policies.json

{
  "policies": {
    "BlockAboutAddons": true | false
  }
}

BlockAboutConfig

Block access to about:config.

Compatibility: Firefox 60, Firefox ESR 60
CCK2 Equivalent: disableAboutConfig
Preferences Affected: N/A

Windows (GPO)

Software\Policies\Mozilla\Firefox\BlockAboutConfig = 0x1 | 0x0

macOS

<dict>
  <key>BlockAboutConfig</key>
  <true/> | <false/>
</dict>

policies.json

{
  "policies": {
    "BlockAboutConfig": true | false
  }
}

BlockAboutProfiles

Block access to About Profiles (about:profiles).

Compatibility: Firefox 60, Firefox ESR 60
CCK2 Equivalent: disableAboutProfiles
Preferences Affected: N/A

Windows (GPO)

Software\Policies\Mozilla\Firefox\BlockAboutProfiles = 0x1 | 0x0

macOS

<dict>
  <key>BlockAboutProfiles</key>
  <true/> | <false/>
</dict>

policies.json

{
  "policies": {
    "BlockAboutProfiles": true | false
  }
}

BlockAboutSupport

Block access to Troubleshooting Information (about:support).

Compatibility: Firefox 60, Firefox ESR 60
CCK2 Equivalent: disableAboutSupport
Preferences Affected: N/A

Windows (GPO)

Software\Policies\Mozilla\Firefox\BlockAboutSupport = 0x1 | 0x0

macOS

<dict>
  <key>BlockAboutSupport</key>
  <true/> | <false/>
</dict>

policies.json

{
  "policies": {
    "BlockAboutSupport": true | false
  }
}

Bookmarks

Add bookmarks in either the bookmarks toolbar or menu. Only Title and URL are required. If Placement is not specified, the bookmark will be placed on the toolbar. If Folder is specified, it is automatically created and bookmarks with the same folder name are grouped together.

Compatibility: Firefox 60, Firefox ESR 60
CCK2 Equivalent: bookmarks.toolbar,bookmarks.menu
Preferences Affected: N/A

Windows (GPO)

Software\Policies\Mozilla\Firefox\Bookmarks\1\Title = "Example"
Software\Policies\Mozilla\Firefox\Bookmarks\1\URL = "https://example.com"
Software\Policies\Mozilla\Firefox\Bookmarks\1\Favicon = "https://example.com/favicon.ico"
Software\Policies\Mozilla\Firefox\Bookmarks\1\Placement = "toolbar" | "menu"
Software\Policies\Mozilla\Firefox\Bookmarks\1\Folder = "FolderName"

macOS

<dict>
  <key>Bookmarks</key>
  <array>
    <dict>
      <key>Title</key>
      <string>Example</string>
      <key>URL</key>
      <string>https://example.com</string>
      <key>Favicon</key>
      <string>https://example.com/favicon.ico</string>
      <key>Placement</key>
      <string>toolbar | menu</string>
      <key>Folder</key>
      <string>FolderName</string>
    </dict>
  </array>
</dict>

policies.json

{
  "policies": {
    "Bookmarks": [
      {
        "Title": "Example",
        "URL": "https://example.com",
        "Favicon": "https://example.com/favicon.ico",
        "Placement": "toolbar" | "menu",
        "Folder": "FolderName"
      }
    ]
  }
}

CaptivePortal

Enable or disable the detection of captive portals.

Compatibility: Firefox 67, Firefox ESR 60.7
CCK2 Equivalent: N/A
Preferences Affected: network.captive-portal-service.enabled

Windows (GPO)

Software\Policies\Mozilla\Firefox\CaptivePortal = 0x1 | 0x0

macOS

<dict>
  <key>CaptivePortal</key>
  <true/> | <false/>
</dict>

policies.json

{
  "policies": {
    "CaptivePortal": true | false
  }
}

Certificates

Certificates | ImportEnterpriseRoots

Trust certificates that have been added to the operating system certificate store by a user or administrator.

See https://support.mozilla.org/kb/setting-certificate-authorities-firefox for more detail.

Compatibility: Firefox 60, Firefox ESR 60 (macOS support in Firefox 63, Firefox ESR 68)
CCK2 Equivalent: N/A
Preferences Affected: security.enterprise_roots.enabled

Windows (GPO)

Software\Policies\Mozilla\Firefox\Certificates\ImportEnterpriseRoots = 0x1 | 0x0

macOS

<dict>
  <key>Certificates</key>
  <dict>
    <key>ImportEnterpriseRoots</key>
    <true/> | <false/>
  </dict>
</dict>

policies.json

{
  "policies": {
    "Certificates": {
      "ImportEnterpriseRoots": true | false
    }
  }
}

Certificates | Install

Install certificates into the Firefox certificate store. If only a filename is specified, Firefox searches for the file in the following locations:

• Windows
  • %USERPROFILE%\AppData\Local\Mozilla\Certificates
  • %USERPROFILE%\AppData\Roaming\Mozilla\Certificates
• macOS
  • /Library/Application Support/Mozilla/Certificates
  • ~/Library/Application Support/Mozilla/Certificates
• Linux
  • /usr/lib/mozilla/certificates
  • /usr/lib64/mozilla/certificates
  • ~/.mozilla/certificates

Starting with Firefox 65, Firefox 60.5 ESR, a fully qualified path can be used, including UNC paths. You should use the native path style for your operating system. We do not support using %USERPROFILE% or other environment variables on Windows.

If you are specifying the path in the policies.json file on Windows, you need to escape your backslashes (\\) which means that for UNC paths, you need to escape both (\\\\). If you use group policy, you only need one backslash.

Certificates are installed using the trust string CT,CT,.

Binary (DER) and ASCII (PEM) certificates are both supported.

Compatibility: Firefox 64, Firefox ESR 64
CCK2 Equivalent: certs.ca
Preferences Affected: N/A

Windows (GPO)

Software\Policies\Mozilla\Firefox\Certificates\Install\1 = "cert1.der"
Software\Policies\Mozilla\Firefox\Certificates\Install\2 = "C:\Users\username\cert2.pem"

macOS

<dict>
  <key>Certificates</key>
  <dict>
    <key>Install</key>
    <array>
      <string>cert1.der</string>
      <string>/Users/username/cert2.pem</string>
    </array>
  </dict>
</dict>

policies.json

{
  "policies": {
    "Certificates": {
      "Install": ["cert1.der", "/home/username/cert2.pem"]
    }
  }
}

Cookies

Configure cookie preferences.

Allow is a list of origins (not domains) where cookies are always allowed. You must include http or https.

Block is a list of origins (not domains) where cookies are always blocked. You must include http or https.

Default determines whether cookies are accepted at all.

AcceptThirdParty determines how third-party cookies are handled.

ExpireAtSessionEnd determines when cookies expire.

RejectTracker only rejects cookies for trackers.

Locked prevents the user from changing cookie preferences.

Compatibility: Firefox 60, Firefox ESR 60 (RejectTracker was added in Firefox 63)
CCK2 Equivalent: N/A
Preferences Affected: network.cookie.cookieBehavior,network.cookie.lifetimePolicy

Windows (GPO)

Software\Policies\Mozilla\Firefox\Cookies\Allow\1 = "https://example.com"
Software\Policies\Mozilla\Firefox\Cookies\Block\1 = "https://example.org"
Software\Policies\Mozilla\Firefox\Cookies\Default = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\Cookies\AcceptThirdParty = "always" | "never" |"from-visited"
Software\Policies\Mozilla\Firefox\Cookies\ExpireAtSessionEnd = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\Cookies\RejectTracker = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\Cookies\Locked = 0x1 | 0x0

macOS

<dict>
  <key>Cookies</key>
  <dict>
    <key>Allow</key>
    <array>
      <string>http://example.com</string>
    </array>
    <key>Block</key>
    <array>
      <string>http://example.org</string>
    </array>
    <key>Default</key>
    <true/> | <false/>
    <key>AcceptThirdParty</key>
    <string>always | never | from-visited</string>
    <key>ExpireAtSessionEnd</key>
    <true/> | <false/>
    <key>RejectTracker</key>
    <true/> | <false/>
    <key>Locked</key>
    <true/> | <false/>
  </dict>
</dict>

policies.json

{
  "policies": {
    "Cookies": {
      "Allow": ["http://example.org/"],
      "Block": ["http://example.edu/"],
      "Default": true | false,
      "AcceptThirdParty": "always" | "never" | "from-visited",
      "ExpireAtSessionEnd": true | false,
      "RejectTracker": true | false,
      "Locked": true | false
    }
  }
}

DisableSetDesktopBackground

Remove the "Set As Desktop Background..." menuitem when right clicking on an image.

Compatibility: Firefox 60, Firefox ESR 60
CCK2 Equivalent: removeSetDesktopBackground
Preferences Affected: N/A

Windows (GPO)

Software\Policies\Mozilla\Firefox\DisableSetDesktopBackground = 0x1 | 0x0

macOS

<dict>
  <key>DisableSetDesktopBackground</key>
  <true/> | <false/>
</dict>

policies.json

{
  "policies": {
    "DisableSetDesktopBackground": true | false
  }
}

DisableMasterPasswordCreation

Remove the master password functionality.

Compatibility: Firefox 60, Firefox ESR 60
CCK2 Equivalent: noMasterPassword
Preferences Affected: N/A

Windows (GPO)

Software\Policies\Mozilla\Firefox\DisableMasterPasswordCreation = 0x1 | 0x0

macOS

<dict>
  <key>DisableMasterPasswordCreation</key>
  <true/> | <false/>
</dict>

policies.json

{
  "policies": {
    "DisableMasterPasswordCreation": true | false
  }
}

DisableAppUpdate

Turn off application updates.

Compatibility: Firefox 60, Firefox ESR 60
CCK2 Equivalent: disableFirefoxUpdates
Preferences Affected: N/A

Windows (GPO)

Software\Policies\Mozilla\Firefox\DisableAppUpdate = 0x1 | 0x0

macOS

<dict>
  <key>DisableAppUpdate</key>
  <true/> | <false/>
</dict>

policies.json

{
  "policies": {
    "DisableAppUpdate": true | false
  }
}

DisableBuiltinPDFViewer

Disable the built in PDF viewer. PDF files are downloaded and sent externally.

Compatibility: Firefox 60, Firefox ESR 60
CCK2 Equivalent: disablePDFjs
Preferences Affected: pdfjs.disabled

Windows (GPO)

Software\Policies\Mozilla\Firefox\DisableBuiltinPDFViewer = 0x1 | 0x0

macOS

<dict>
  <key>DisableBuiltinPDFViewer</key>
  <true/> | <false/>
</dict>

policies.json

{
  "policies": {
    "DisableBuiltinPDFViewer": true | false
  }
}

DisabledCiphers

Disable specific cryptographic ciphers.

Compatibility: Firefox 76, Firefox ESR 68.8
CCK2 Equivalent: N/A
Preferences Affected: N/A

Windows (GPO)

Software\Policies\Mozilla\Firefox\DisabledCiphers\TLS_DHE_RSA_WITH_AES_128_CBC_SHA = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\DisabledCiphers\TLS_DHE_RSA_WITH_AES_256_CBC_SHA = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\DisabledCiphers\TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\DisabledCiphers\TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\DisabledCiphers\TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\DisabledCiphers\TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\DisabledCiphers\TLS_RSA_WITH_AES_128_CBC_SHA = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\DisabledCiphers\TLS_RSA_WITH_AES_256_CBC_SHA = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\DisabledCiphers\TLS_RSA_WITH_3DES_EDE_CBC_SHA = 0x1 | 0x0

macOS

<dict>
  <key>DisabledCiphers</key>
    <dict>
      <key>TLS_DHE_RSA_WITH_AES_128_CBC_SHA</key>
      <true/> | <false/>
      <key>TLS_DHE_RSA_WITH_AES_256_CBC_SHA</key>
      <true/> | <false/>
      <key>TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA</key>
      <true/> | <false/>
      <key>TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA</key>
      <true/> | <false/>
      <key>TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256</key>
      <true/> | <false/>
      <key>TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256</key>
      <true/> | <false/>
      <key>TLS_RSA_WITH_AES_128_CBC_SHA</key>
      <true/> | <false/>
      <key>TLS_RSA_WITH_AES_256_CBC_SHA</key>
      <true/> | <false/>
      <key>TLS_RSA_WITH_3DES_EDE_CBC_SHA</key>
      <true/> | <false/>
    </dict>
</dict>

policies.json

{
  "policies": {
    "DisabledCiphers" {
      "TLS_DHE_RSA_WITH_AES_128_CBC_SHA": true | false,
      "TLS_DHE_RSA_WITH_AES_256_CBC_SHA": true | false,
      "TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA": true | false,
      "TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA": true | false,
      "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256": true | false,
      "TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256": true | false,
      "TLS_RSA_WITH_AES_128_CBC_SHA": true | false,
      "TLS_RSA_WITH_AES_256_CBC_SHA": true | false,
      "TLS_RSA_WITH_3DES_EDE_CBC_SHA": true | false
    }
  }
}

DisableDefaultBrowserAgent

Prevent the default browser agent from taking any actions. Only applicable to Windows; other platforms don’t have the agent.

Compatibility: Firefox 75, Firefox ESR 68.7 (Windows only)
CCK2 Equivalent: N/A
Preferences Affected: N/A

Windows (GPO)

Software\Policies\Mozilla\Firefox\DisableDefaultBrowserAgent = 0x1 | 0x0

policies.json

{
  "policies": {
    "DisableDefaultBrowserAgent": true | false
  }
}

DisableDeveloperTools

Remove access to all developer tools.

Compatibility: Firefox 60, Firefox ESR 60
CCK2 Equivalent: removeDeveloperTools
Preferences Affected: devtools.policy.disabled

Windows (GPO)

Software\Policies\Mozilla\Firefox\DisableDeveloperTools = 0x1 | 0x0`

macOS

<dict>
  <key>DisableDeveloperTools</key>
  <true/> | <false/>
</dict>

policies.json

{
  "policies": {
    "DisableDeveloperTools": true | false
  }
}

DisableFeedbackCommands

Disable the menus for reporting sites (Submit Feedback, Report Deceptive Site).

Compatibility: Firefox 60, Firefox ESR 60
CCK2 Equivalent: N/A
Preferences Affected: N/A

Windows (GPO)

Software\Policies\Mozilla\Firefox\DisableFeedbackCommands = 0x1 | 0x0

macOS

<dict>
  <key>DisableFeedbackCommands</key>
  <true/> | <false/>
</dict>

policies.json

{
  "policies": {
    "DisableFeedbackCommands": true | false
  }
}

DisableFirefoxScreenshots

Remove access to Firefox Screenshots.

Compatibility: Firefox 60, Firefox ESR 60
CCK2 Equivalent: N/A
Preferences Affected: extensions.screenshots.disabled

Windows (GPO)

Software\Policies\Mozilla\Firefox\DisableFirefoxScreenshots = 0x1 | 0x0

macOS

<dict>
  <key>DisableFirefoxScreenshots</key>
  <true/> | <false/>
</dict>

policies.json

{
  "policies": {
    "DisableFirefoxScreenshots": true | false
  }
}

DisableFirefoxAccounts

Disable Firefox Accounts integration (Sync).

Compatibility: Firefox 60, Firefox ESR 60
CCK2 Equivalent: disableSync
Preferences Affected: identity.fxaccounts.enabled

Windows (GPO)

Software\Policies\Mozilla\Firefox\DisableFirefoxAccounts = 0x1 | 0x0

macOS

<dict>
  <key>DisableFirefoxAccounts</key>
  <true/> | <false/>
</dict>

policies.json

{
  "policies": {
    "DisableFirefoxAccounts": true | false
  }
}

DisableFirefoxStudies

Disable Firefox studies (Shield).

Compatibility: Firefox 60, Firefox ESR 60
CCK2 Equivalent: N/A
Preferences Affected: N/A

Windows (GPO)

Software\Policies\Mozilla\Firefox\DisableFirefoxStudies = 0x1 | 0x0

macOS

<dict>
  <key>DisableFirefoxStudies</key>
  <true/> | <false/>
</dict>

policies.json

{
  "policies": {
    "DisableFirefoxStudies": true | false
  }
}

DisableForgetButton

Disable the "Forget" button.

Compatibility: Firefox 60, Firefox ESR 60
CCK2 Equivalent: disableForget
Preferences Affected: N/A

Windows (GPO)

Software\Policies\Mozilla\Firefox\DisableForgetButton = 0x1 | 0x0

macOS

<dict>
  <key>DisableForgetButton</key>
  <true/> | <false/>
</dict>

policies.json

{
  "policies": {
    "DisableForgetButton": true | false
  }
}

DisableFormHistory

Turn off saving information on web forms and the search bar.

Compatibility: Firefox 60, Firefox ESR 60
CCK2 Equivalent: disableFormFill
Preferences Affected: browser.formfill.enable

Windows (GPO)

Software\Policies\Mozilla\Firefox\DisableFormHistory = 0x1 | 0x0

macOS

<dict>
  <key>DisableFormHistory</key>
  <true/> | <false/>
</dict>

policies.json

{
  "policies": {
    "DisableFormHistory": true | false
  }
}

DisablePasswordReveal

Do not allow passwords to be shown in saved logins

Compatibility: Firefox 71, Firefox ESR 68.3
CCK2 Equivalent: N/A Preferences Affected: N/A

Windows (GPO)

Software\Policies\Mozilla\Firefox\DisablePasswordReveal = 0x1 | 0x0

macOS

<dict>
  <key>DisablePasswordReveal</key>
  <true/> | <false/>
</dict>

policies.json

{
  "policies": {
    "DisablePasswordReveal": true | false
  }
}

DisablePocket

Remove Pocket in the Firefox UI. It does not remove it from the new tab page.

Compatibility: Firefox 60, Firefox ESR 60
CCK2 Equivalent: disablePocket
Preferences Affected: extensions.pocket.enabled

Windows (GPO)

Software\Policies\Mozilla\Firefox\DisablePocket = 0x1 | 0x0

macOS

<dict>
  <key>DisablePocket</key>
  <true/> | <false/>
</dict>

policies.json

{
  "policies": {
    "DisablePocket": true | false
  }
}

DisablePrivateBrowsing

Remove access to private browsing.

Compatibility: Firefox 60, Firefox ESR 60
CCK2 Equivalent: disablePrivateBrowsing
Preferences Affected: N/A

Windows (GPO)

Software\Policies\Mozilla\Firefox\DisablePrivateBrowsing = 0x1 | 0x0

macOS

<dict>
  <key>DisablePrivateBrowsing</key>
  <true/> | <false/>
</dict>

policies.json

{
  "policies": {
    "DisablePrivateBrowsing": true | false
  }
}

DisableProfileImport

Disables the "Import data from another browser" option in the bookmarks window.

Compatibility: Firefox 60, Firefox ESR 60
CCK2 Equivalent: N/A
Preferences Affected: N/A

Windows (GPO)

Software\Policies\Mozilla\Firefox\DisableProfileImport = 0x1 | 0x0

macOS

<dict>
  <key>DisableProfileImport</key>
  <true/> | <false/>
</dict>

policies.json

{
  "policies": {
    "DisableProfileImport": true | false
  }
}

DisableProfileRefresh

Disable the Refresh Firefox button on about:support and support.mozilla.org, as well as the prompt that displays offering to refresh Firefox when you haven't used it in a while.

Compatibility: Firefox 60, Firefox ESR 60
CCK2 Equivalent: disableResetFirefox
Preferences Affected: browser.disableResetPrompt

Windows (GPO)

Software\Policies\Mozilla\Firefox\DisableProfileRefresh = 0x1 | 0x0

macOS

<dict>
  <key>DisableProfileRefresh</key>
  <true/> | <false/>
</dict>

policies.json

{
  "policies": {
    "DisableProfileRefresh": true | false
  }
}

DisableSafeMode

Disable safe mode within the browser.

On Windows, this disables safe mode via the command line as well.

Compatibility: Firefox 60, Firefox ESR 60 (Windows, macOS)
CCK2 Equivalent: disableSafeMode
Preferences Affected: N/A

Windows (GPO)

Software\Policies\Mozilla\Firefox\DisableSafeMode = 0x1 | 0x0

macOS

<dict>
  <key>DisableSafeMode</key>
  <true/> | <false/>
</dict>

policies.json

{
  "policies": {
    "DisableSafeMode": true | false
  }
}

DisableSecurityBypass

Prevent the user from bypassing security in certain cases.

InvalidCertificate prevents adding an exception when an invalid certificate is shown.

SafeBrowsing prevents selecting "ignore the risk" and visiting a harmful site anyway.

Compatibility: Firefox 60, Firefox ESR 60
CCK2 Equivalent: N/A
Preferences Affected: security.certerror.hideAddException,browser.safebrowsing.allowOverride

Windows (GPO)

Software\Policies\Mozilla\Firefox\DisableSecurityBypass\InvalidCertificate = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\DisableSecurityBypass\SafeBrowsing = 0x1 | 0x0

macOS

<dict>
  <key>DisableSecurityBypass</key>
  <dict>
    <key>InvalidCertificate</key>
    <true/> | <false/>
    <key><SafeBrowsing/key>
    <true/> | <false/>
  </dict>
</dict>

policies.json

{
  "policies": {
    "DisableSecurityBypass": {
      "InvalidCertificate": true false,
      "SafeBrowsing": true false
    }
  }
}

DisableSystemAddonUpdate

Prevent system add-ons from being installed or update.

Compatibility: Firefox 60, Firefox ESR 60
CCK2 Equivalent: N/A
Preferences Affected: N/A

Windows (GPO)

macOS

<dict>
  <key>DisableSystemAddonUpdate</key>
  <true/> | <false/>
</dict>

policies.json

{
  "policies": {
    "DisableSystemAddonUpdate": true | false
  }
}

DisableTelemetry

Prevent the upload of telemetry data.

Mozilla recommends that you do not disable telemetry. Information collected through telemetry helps us build a better product for businesses like yours.

Compatibility: Firefox 60, Firefox ESR 60
CCK2 Equivalent: disableTelemetry
Preferences Affected: datareporting.healthreport.uploadEnabled,datareporting.policy.dataSubmissionEnabled

Windows (GPO)

Software\Policies\Mozilla\Firefox\DisableTelemetry = 0x1 | 0x0

macOS

<dict>
  <key>DisableTelemetry</key>
  <true/> | <false/>
</dict>

policies.json

{
  "policies": {
    "DisableTelemetry": true | false
  }
}

DisplayBookmarksToolbar

Set the initial state of the bookmarks toolbar. A user can still hide it and it will stay hidden.

Compatibility: Firefox 60, Firefox ESR 60
CCK2 Equivalent: displayBookmarksToolbar
Preferences Affected: N/A

Windows (GPO)

Software\Policies\Mozilla\Firefox\DisplayBookmarksToolbar = 0x1 | 0x0

macOS

<dict>
  <key>DisplayBookmarksToolbar</key>
  <true/> | <false/>
</dict>

policies.json

{
  "policies": {
    "DisplayBookmarksToolbar": true | false
  }
}

DisplayMenuBar (Deprecated)

Set the initial state of the menubar. A user can still hide it and it will stay hidden.

Compatibility: Firefox 60, Firefox ESR 60 (Windows, some Linux)
CCK2 Equivalent: displayMenuBar
Preferences Affected: N/A

Windows (GPO)

Software\Policies\Mozilla\Firefox\DisplayMenuBar = 0x1 | 0x0

macOS

<dict>
  <key>DisplayMenuBar</key>
  <true/> | <false/>
</dict>

policies.json

{
  "policies": {
    "DisplayMenuBar": true | false
  }
}

DisplayMenuBar

Set the state of the menubar.

always means the menubar is shown and cannot be hidden.

never means the menubar is hidden and cannot be shown.

default-on means the menubar is on by default but can be hidden.

default-off means the menubar is off by default but can be shown.

Compatibility: Firefox 73, Firefox ESR 68.5 (Windows, some Linux)
CCK2 Equivalent: displayMenuBar
Preferences Affected: N/A

Windows (GPO)

Software\Policies\Mozilla\Firefox\DisplayMenuBar = "always", "never", "default-on", "default-off"

macOS

<dict>
  <key>DisplayMenuBar</key>
  <string>always | never | default-on | default-off</string>
</dict>

policies.json

{
  "policies": {
    "DisplayMenuBar": "always", "never", "default-on", "default-off"
  }
}

DNSOverHTTPS

Configure DNS over HTTPS.

Enabled determines whether DNS over HTTPS is enabled

ProviderURL is a URL to another provider.

Locked prevents the user from changing DNS over HTTPS preferences.

ExcludedDomains excludes domains from DNS over HTTPS.

Compatibility: Firefox 63, Firefox ESR 68 (ExcludedDomains added in 75/68.7)
CCK2 Equivalent: N/A
Preferences Affected: network.trr.mode,network.trr.uri

Windows (GPO)

Software\Policies\Mozilla\Firefox\DNSOverHTTPS\Enabled = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\DNSOverHTTPS\ProviderURL = "URL_TO_ALTERNATE_PROVIDER"
Software\Policies\Mozilla\Firefox\DNSOverHTTPS\Locked = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\DNSOverHTTPS\ExcludedDomains\1 = "example.com"

macOS

<dict>
  <key>DNSOverHTTPS</key>
  <dict>
    <key>Enabled</key>
    <true/> | <false/>
    <key>ProviderURL</key>
    <string>URL_TO_ALTERNATE_PROVIDER</string>
    <key>Locked</key>
    <true/> | <false/>
    <key>ExcludedDomains</key>
    <array>
      <string>example.com</string>
    </array>
  </dict>
</dict>

policies.json

{
  "policies": {
    "DNSOverHTTPS": {
      "Enabled":  true | false,
      "ProviderURL": "URL_TO_ALTERNATE_PROVIDER",
      "Locked": true | false,
      "ExcludedDomains": ["example.com"]
    }
  }
}

DontCheckDefaultBrowser

Don't check if Firefox is the default browser at startup.

Compatibility: Firefox 60, Firefox ESR 60
CCK2 Equivalent: dontCheckDefaultBrowser
Preferences Affected: browser.shell.checkDefaultBrowser

Windows (GPO)

Software\Policies\Mozilla\Firefox\DontCheckDefaultBrowser = 0x1 | 0x0

macOS

<dict>
  <key>DontCheckDefaultBrowser</key>
  <true/> | <false/>
</dict>

policies.json

{
  "policies": {
    "DontCheckDefaultBrowser": true | false
  }
}

DefaultDownloadDirectory

Set the default download directory.

You can use ${home} for the native home directory.

Compatibility: Firefox 68, Firefox ESR 68
CCK2 Equivalent: N/A
Preferences Affected: browser.download.dir,browser.download.folderList

Windows (GPO)

Software\Policies\Mozilla\Firefox\DefaultDownloadDirectory = "${home}\Downloads"

macOS

<dict>
  <key>DefaultDownloadDirectory</key>
  <string>${home}/Downloads</string>
</dict>

policies.json (macOS and Linux)

{
  "policies": {
    "DefaultDownloadDirectory": "${home}/Downloads"
}

policies.json (Windows)

{
  "policies": {
    "DefaultDownloadDirectory": "${home}\\Downloads"
}

DownloadDirectory

Set and lock the download directory.

You can use ${home} for the native home directory.

Compatibility: Firefox 68, Firefox ESR 68
CCK2 Equivalent: N/A
Preferences Affected: browser.download.dir,browser.download.folderList,browser.download.useDownloadDir

Windows (GPO)

Software\Policies\Mozilla\Firefox\DownloadDirectory = "${home}\Downloads"

macOS

<dict>
  <key>DownloadDirectory</key>
  <string>${home}/Downloads</string>
</dict>

policies.json (macOS and Linux)

{
  "policies": {
    "DownloadDirectory": "${home}/Downloads"
}

policies.json (Windows)

{
  "policies": {
    "DownloadDirectory": "${home}\\Downloads"
}

EnableTrackingProtection

Configure tracking protection.

If this policy is not configured, tracking protection is not enabled by default in the browser, but it is enabled by default in private browsing and the user can change it.

If Value is set to false, tracking protection is disabled and locked in both the regular browser and private browsing.

If Value is set to true, tracking protection is enabled by default in both the regular browser and private browsing and the Locked value determines whether or not a user can change it.

If Cryptomining is set to true, cryptomining scripts on websites are blocked.

If Fingerprinting is set to true, fingerprinting scripts on websites are blocked.

Exceptions are origins for which tracking protection is not enabled.

Compatibility: Firefox 60, Firefox ESR 60 (Cryptomining and Fingerprinting added in 70/68.2, Exceptions added in 73/68.5)
CCK2 Equivalent: N/A
Preferences Affected: privacy.trackingprotection.enabled,privacy.trackingprotection.pbmode.enabled,privacy.trackingprotection.cryptomining.enabled,privacy.trackingprotection.fingerprinting.enabled

Windows (GPO)

Software\Policies\Mozilla\Firefox\EnableTrackingProtection\Value = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\EnableTrackingProtection\Locked = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\EnableTrackingProtection\Cryptomining = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\EnableTrackingProtection\Fingerprinting = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\EnableTrackingProtection\Exceptions\1 = "https://example.com"

macOS

<dict>
  <key>EnableTrackingProtection</key>
  <dict>
    <key>Value</key>
    <true/> | <false/>
    <key><Locked</key>
    <true/> | <false/>
    <key><Cryptomining</key>
    <true/> | <false/>
    <key><Fingerprinting</key>
    <true/> | <false/>
    <key>Exceptions</key>
    <array>
      <string>https://example.com</string>
    </array>
  </dict>
</dict>

policies.json

{
  "policies": {
    "EnableTrackingProtection": {
      "Value": [true, false],
      "Locked": [true, false],
      "Cryptomining": [true, false],
      "Fingerprinting": [true, false],
      "Exceptions": ["https://example.com"]
    }
}

EnterprisePoliciesEnabled

Enable policy support on macOS.

Compatibility: Firefox 63, Firefox ESR 60.3 (macOS only)
CCK2 Equivalent: N/A
Preferences Affected: N/A

macOS

<dict>
  <key>EnterprisePoliciesEnabled</key>
  <true/>
</dict>

Extensions

Control the installation, uninstallation and locking of extensions.

Install is a list of URLs or native paths for extensions to be installed.

Uninstall is a list of extension IDs that should be uninstalled if found.

Locked is a list of extension IDs that the user cannot disable or uninstall.

Compatibility: Firefox 60, Firefox ESR 60
CCK2 Equivalent: addons
Preferences Affected: N/A

Windows (GPO)

Software\Policies\Mozilla\Firefox\Extensions\Install\1 = "https://addons.mozilla.org/firefox/downloads/somefile.xpi"
Software\Policies\Mozilla\Firefox\Extensions\Install\2 = "//path/to/xpi"
Software\Policies\Mozilla\Firefox\Extensions\Uninstall\1 = "bad_addon_id@mozilla.org"
Software\Policies\Mozilla\Firefox\Extensions\Locked\1 = "addon_id@mozilla.org"

macOS

<dict>
  <key>Extensions</key>
  <dict>
    <key>Install</key>
    <array>
      <string>https://addons.mozilla.org/firefox/downloads/somefile.xpi</string>
      <string>//path/to/xpi</string>
    </array>
    <key>Uninstall</key>
    <array>
      <string>bad_addon_id@mozilla.org</string>
    </array>
    <key>Locked</key>
    <array>
      <string>addon_id@mozilla.org</string>
    </array>
  </dict>
</dict>

policies.json

{
  "policies": {
    "Extensions": {
      "Install": ["https://addons.mozilla.org/firefox/downloads/somefile.xpi", "//path/to/xpi"],
      "Uninstall": ["bad_addon_id@mozilla.org"],
      "Locked":  ["addon_id@mozilla.org"]
    }
  }
}

ExtensionSettings

Manage all aspects of extensions. This policy is based heavily on the Chrome policy of the same name.

This policy maps an extension ID to its configuration. With an extension ID, the configuration will be applied to the specified extension only. A default configuration can be set for the special ID "*", which will apply to all extensions that don't have a custom configuration set in this policy.

To obtain an extension ID, install the extension and go to about:support. You will see the ID in the Extensions section.

The configuration for each extension is another dictionary that can contain the fields documented below.

Name	Description
installation_mode	Maps to a string indicating the installation mode for the extension. The valid strings are allowed,blocked,force_installed, and normal_installed.
allowed	Allows the extension to be installed by the user. This is the default behavior.
blocked	Blocks installation of the extension and removes it from the device if already installed.
force_installed	The extension is automatically installed and can't be removed by the user. This option is not valid for the default configuration and requires an install_url.
normal_installed	The extension is automatically installed but can be disabled by the user. This option is not valid for the default configuration and requires an install_url.
install_url	Maps to a URL indicating where Firefox can download a force_installed or normal_installed extension. If installing from the addons.mozilla.org, use the following URL (substituting SHORT_NAME from the URL on AMO), https://addons.mozilla.org/firefox/downloads/latest/SHORT_NAME/latest.xpi. If installing from the local file system, use a file:/// URL. Languages packs are available from https://releases.mozilla.org/pub/firefox/releases/VERSION/PLATFORM/xpi/LANGUAGE.xpi.
install_sources	Each item in this list is an extension-style match pattern. Users will be able to easily install items from any URL that matches an item in this list. Both the location of the *.xpi file and the page where the download is started from (i.e. the referrer) must be allowed by these patterns. This setting can be used only for the default configuration.
allowed_types	This setting whitelists the allowed types of extension/apps that can be installed in Firefox. The value is a list of strings, each of which should be one of the following: "extension", "theme", "dictionary", "langpack" This setting can be used only for the default configuration.
blocked_install_message	This maps to a string specifying the error message to display to users if they're blocked from installing an extension. This setting allows you to append text to the generic error message displayed when the extension is blocked. This could be be used to direct users to your help desk, explain why a particular extension is blocked, or something else.

Compatibility: Firefox 69, Firefox ESR 68.1
CCK2 Equivalent: N/A
Preferences Affected: N/A

Windows (GPO)

Software\Policies\Mozilla\Firefox\ExtensionSettings (REG_MULTI_SZ) =
{
  "*": {
    "blocked_install_message": "Custom error message.",
    "install_sources": ["https://addons.mozilla.org/"],
    "installation_mode": "blocked",
    "allowed_types": ["extension"]
  },
  "uBlock0@raymondhill.net": {
    "installation_mode": "force_installed",
    "install_url": "https://addons.mozilla.org/firefox/downloads/latest/ublock-origin/latest.xpi"
  }
}

macOS

<dict>
  <key>ExtensionSettings</key>
  <dict>
    <key>*</key>
    <dict>
      <key>blocked_install_message</key>
      <string>Custom error message.</string>
      <key>install_sources</key>
      <array>
        <string>https://addons.mozilla.org/</string>
      </array>
      <key>installation_mode</key>
      <string>blocked</string>
      <key>allowed_types</key>
      <array>
        <string>extension</string>
      </array>
    </dict>
    <key>uBlock0@raymondhill.net</key>
    <dict>
      <key>installation_mode</key>
       <string>force_installed</string>
      <key>install_url</key>
      <string>https://addons.mozilla.org/firefox/downloads/latest/ublock-origin/latest.xpi</string>
    </dict>
  </dict>
</dict>

policies.json

{
  "policies": {
    "ExtensionSettings": {
      "*": {
        "blocked_install_message": "Custom error message.",
        "install_sources": ["https://addons.mozilla.org/"],
        "installation_mode": "blocked",
        "allowed_types": ["extension"]
      },
      "uBlock0@raymondhill.net": {
        "installation_mode": "force_installed",
        "install_url": "https://addons.mozilla.org/firefox/downloads/latest/ublock-origin/latest.xpi"
      }
    }
  }
}

ExtensionUpdate

Control extension updates.

Compatibility: Firefox 67, Firefox ESR 60.7
CCK2 Equivalent: N/A
Preferences Affected: extensions.update.enabled

Windows (GPO)

Software\Policies\Mozilla\Firefox\ExtensionUpdate = 0x1 | 0x0

macOS

<dict>
  <key>ExtensionUpdate</key>
  <true/> | <false/>
</dict>

policies.json

{
  "policies": {
    "ExtensionUpdate": true | false
  }
}

FlashPlugin

Configure the default Flash plugin policy as well as origins for which Flash is allowed.

Allow is a list of origins where Flash are allowed.

Block is a list of origins where Flash is not allowed.

Default determines whether or not Flash is allowed by default.

Locked prevents the user from changing Flash preferences.

Compatibility: Firefox 60, Firefox ESR 60
CCK2 Equivalent: permissions.plugin
Preferences Affected: plugin.state.flash

Windows (GPO)

Software\Policies\Mozilla\Firefox\FlashPlugin\Allow\1 = "https://example.org"
Software\Policies\Mozilla\Firefox\FlashPlugin\Block\1 = "https://example.edu"
Software\Policies\Mozilla\Firefox\FlashPlugin\Default = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\FlashPlugin\Locked = 0x1 | 0x0

macOS

<dict>
  <key>FlashPlugin</key>
  <dict>
    <key>Allow</key>
    <array>
      <string>http://example.org</string>
    </array>
    <key>Block</key>
    <array>
      <string>http://example.edu</string>
    </array>
    <key>Default</key>
    <true/> | <false/>
    <key>Locked</key>
    <true/> | <false/>
  </dict>
</dict>

policies.json

{
  "policies": {
    "FlashPlugin": {
      "Allow": ["http://example.org/"],
      "Block": ["http://example.edu/"],
      "Default": true | false,
      "Locked": true | false
    }
  }
}

FirefoxHome

Customize the Firefox Home page.

Compatibility: Firefox 68, Firefox ESR 68
CCK2 Equivalent: N/A
Preferences Affected: browser.newtabpage.activity-stream.showSearch,browser.newtabpage.activity-stream.feeds.topsites,browser.newtabpage.activity-stream.feeds.section.highlights,browser.newtabpage.activity-stream.feeds.section.topstories,browser.newtabpage.activity-stream.feeds.snippets

Windows (GPO)

Software\Policies\Mozilla\Firefox\FirefoxHome\Search = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\FirefoxHome\TopSites = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\FirefoxHome\Highlights = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\FirefoxHome\Pocket = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\FirefoxHome\Snippets = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\FirefoxHome\Locked = 0x1 | 0x0

macOS

<dict>
  <key>FirefoxHome</key>
  <dict>
    <key>Search</key>
    <true/> | <false/>
    <key>TopSites</key>
    <true/> | <false/>
    <key>Highlights</key>
    <true/> | <false/>
    <key>Pocket</key>
    <true/> | <false/>
    <key>Snippets</key>
    <true/> | <false/>
    <key>Locked</key>
    <true/> | <false/>
  </dict>
</dict>

policies.json

{
  "policies": {
    "FirefoxHome": {
      "Search": true | false,
      "TopSites": true | false,
      "Highlights": true | false,
      "Pocket": true | false,
      "Snippets": true | false,
      "Locked": true | false
    }
  }
}

HardwareAcceleration

Control hardware acceleration.

Compatibility: Firefox 60, Firefox ESR 60
CCK2 Equivalent: N/A
Preferences Affected: layers.acceleration.disabled

Windows (GPO)

Software\Policies\Mozilla\Firefox\HardwareAcceleration = 0x1 | 0x0

macOS

<dict>
  <key>HardwareAcceleration</key>
  <true/> | <false/>
</dict>

policies.json

{
  "policies": {
    "HardwareAcceleration": true | false
  }
}

Homepage

Configure the default homepage and how Firefox starts.

URL is the default homepage.

Locked prevents the user from changing homepage preferences.

Additional allows for more than one homepage.

StartPage is how Firefox starts. The choices are no homepage, the default homepage or the previous session.

Compatibility: Firefox 60, Firefox ESR 60 (StartPage was added in Firefox 60, Firefox ESR 60.4)
CCK2 Equivalent: homePage,lockHomePage
Preferences Affected: browser.startup.homepage,browser.startup.page

Windows (GPO)

Software\Policies\Mozilla\Firefox\Homepage\URL = "https://example.com"
Software\Policies\Mozilla\Firefox\Homepage\Locked = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\Homepage\Additional\1 = "https://example.org"
Software\Policies\Mozilla\Firefox\Homepage\Additional\2 = "https://example.edu"
Software\Policies\Mozilla\Firefox\Homepage\StartPage = "none" | "homepage" |  "previous-session"

macOS

<dict>
  <key>Homepage</key>
  <dict>
    <key>URL</key>
    <string>http://example.com</string>
    <key>Locked</key>
    <true/> | <false/>
    <key>Additional</key>
    <array>
      <string>http://example.org</string>
      <string>http://example.edu</string>
    </array>
    <key>StartPage</key>
    <string>none | homepage | previous-session</string>
  </dict>
</dict>

policies.json

{
  "policies": {
    "Homepage": {
      "URL": "http://example.com/",
      "Locked": true | false,
      "Additional": ["http://example.org/",
                     "http://example.edu/"],
      "StartPage": "none" | "homepage" | "previous-session"
    }
  }
}

InstallAddonsPermission

Configure the default extension install policy as well as origins for extension installs are allowed. This policy does not override turning off all extension installs.

Allow is a list of origins where extension installs are allowed.

Default determines whether or not extension installs are allowed by default.

Compatibility: Firefox 60, Firefox ESR 60
CCK2 Equivalent: permissions.install
Preferences Affected: xpinstall.enabled

Windows (GPO)

Software\Policies\Mozilla\Firefox\InstallAddonsPermission\Allow\1 = "https://example.org"
Software\Policies\Mozilla\Firefox\InstallAddonsPermission\Allow\2 = "https://example.edu"
Software\Policies\Mozilla\Firefox\InstallAddonsPermission\Default = 0x1 | 0x0

macOS

<dict>
  <key>InstallAddonsPermission</key>
  <dict>
    <key>Allow</key>
    <array>
      <string>http://example.org</string>
      <string>http://example.edu</string>
    </array>
    <key>Default</key>
    <true/> | <false/>
  </dict>
</dict>

policies.json

{
  "policies": {
    "InstallAddonsPermission": {
      "Allow": ["http://example.org/",
                "http://example.edu/"],
      "Default": true | false
    }
  }
}

LegacyProfiles

Disable the feature enforcing a separate profile for each installation.

If this policy set to true, Firefox will not try to create different profiles for installations of Firefox in different directories. This is the equivalent of the MOZ_LEGACY_PROFILES environment variable.

If this policy set to false, Firefox will create a new profile for each unique installation of Firefox.

This policy only work on Windows via GPO (not policies.json).

Compatibility: Firefox 70, Firefox ESR 68.2 (Windows only, GPO only)
CCK2 Equivalent: N/A
Preferences Affected: N/A

Windows (GPO)

Software\Policies\Mozilla\Firefox\LegacyProfiles = = 0x1 | 0x0

LocalFileLinks

Enable linking to local files by origin.

Compatibility: Firefox 68, Firefox ESR 68
CCK2 Equivalent: N/A
Preferences Affected: capability.policy.localfilelinks.*

Windows (GPO)

Software\Policies\Mozilla\Firefox\LocalFileLinks\1 = "https://example.org"
Software\Policies\Mozilla\Firefox\LocalFileLinks\2 = "https://example.edu"

macOS

<dict>
  <key>LocalFileLinks</key>
  <array>
    <string>http://example.org</string>
    <string>http://example.edu</string>
  </array>
</dict>

policies.json

{
  "policies": {
    "LocalFileLinks": ["http://example.org/",
                       "http://example.edu/"]
  }
}

NoDefaultBookmarks

Disable the creation of default bookmarks.

This policy is only effective if the user profile has not been created yet.

Compatibility: Firefox 60, Firefox ESR 60
CCK2 Equivalent: removeDefaultBookmarks
Preferences Affected: N/A

Windows (GPO)

Software\Policies\Mozilla\Firefox\NoDefaultBookmarks = 0x1 | 0x0

macOS

<dict>
  <key>NoDefaultBookmarks</key>
  <true/> | <false/>
</dict>

policies.json

{
  "policies": {
    "NoDefaultBookmarks": true | false
  }
}

NetworkPrediction

Enable or disable network prediction (DNS prefetching).

Compatibility: Firefox 67, Firefox ESR 60.7
CCK2 Equivalent: N/A
Preferences Affected: network.dns.disablePrefetch,network.dns.disablePrefetchFromHTTPS

Windows (GPO)

Software\Policies\Mozilla\Firefox\NetworkPrediction = 0x1 | 0x0

macOS

<dict>
  <key>NetworkPrediction</key>
  <true/> | <false/>
</dict>

policies.json

{
  "policies": {
    "NetworkPrediction": true | false
}

NewTabPage

Enable or disable the New Tab page.

Compatibility: Firefox 68, Firefox ESR 68
CCK2 Equivalent: N/A
Preferences Affected: browser.newtabpage.enabled

Windows (GPO)

Software\Policies\Mozilla\Firefox\NewTabPage = 0x1 | 0x0

macOS

<dict>
  <key>NewTabPage</key>
  <true/> | <false/>
</dict>

policies.json

{
  "policies": {
    "NewTabPage": true | false
}

OfferToSaveLogins

Control whether or not Firefox offers to save passwords.

Compatibility: Firefox 60, Firefox ESR 60
CCK2 Equivalent: dontRememberPasswords
Preferences Affected: signon.rememberSignons

Windows (GPO)

Software\Policies\Mozilla\Firefox\OfferToSaveLogins = 0x1 | 0x0

macOS

<dict>
  <key>OfferToSaveLogins</key>
  <true/> | <false/>
</dict>

policies.json

{
  "policies": {
    "OfferToSaveLogins": true | false
  }
}

OfferToSaveLoginsDefault

Sets the default value of signon.rememberSignons without locking it.

Compatibility: Firefox 70, Firefox ESR 60.2
CCK2 Equivalent: dontRememberPasswords
Preferences Affected: signon.rememberSignons

Windows (GPO)

Software\Policies\Mozilla\Firefox\OfferToSaveLoginsDefault = 0x1 | 0x0

macOS

<dict>
  <key>OfferToSaveLoginsDefault</key>
  <true/> | <false/>
</dict>

policies.json

{
  "policies": {
    "OfferToSaveLoginsDefault": true | false
  }
}

OverrideFirstRunPage

Override the first run page. If the value is blank, no first run page is displayed.

Compatibility: Firefox 60, Firefox ESR 60
CCK2 Equivalent: welcomePage,noWelcomePage
Preferences Affected: startup.homepage_welcome_url

Windows (GPO)

Software\Policies\Mozilla\Firefox\OverrideFirstRunPage = "http://example.org"

macOS

<dict>
  <key>OverrideFirstRunPage</key>
  <string>http://example.org</string>
</dict>

policies.json

{
  "policies": {
    "OverrideFirstRunPage": "http://example.org"
}

OverridePostUpdatePage

Override the upgrade page. If the value is blank, no upgrade page is displayed.

Compatibility: Firefox 60, Firefox ESR 60
CCK2 Equivalent: upgradePage,noUpgradePage
Preferences Affected: startup.homepage_override_url

Windows (GPO)

Software\Policies\Mozilla\Firefox\OverridePostUpdatePage = "http://example.org"

macOS

<dict>
  <key>OverridePostUpdatePage</key>
  <string>http://example.org</string>
</dict>

policies.json

{
  "policies": {
    "OverridePostUpdatePage": "http://example.org"
}

PasswordManagerEnabled

Remove access to the password manager via preferences and blocks about:logins on Firefox 70.

Compatibility: Firefox 70, Firefox ESR 60.2
CCK2 Equivalent: N/A
Preferences Affected: pref.privacy.disable_button.view_passwords

Windows (GPO)

Software\Policies\Mozilla\Firefox\PasswordManagerEnabled = 0x1 | 0x0

macOS

<dict>
  <key>PasswordManagerEnabled</key>
  <true/> | <false/>
</dict>

policies.json

{
  "policies": {
    "PasswordManagerEnabled": true | false
  }
}

Permissions

Set permissions associated with camera, microphone, location, notifications, and autoplay. Because these are origins, not domains, entries with unique ports must be specified separately. See examples below.

Allow is a list of origins where the feature is allowed.

Block is a list of origins where the feature is not allowed.

BlockNewRequests determines whether or not new requests can be made for the feature.

Locked prevents the user from changing preferences for the feature.

Default specifies the default value for Autoplay. block-audio-video is not supported on Firefox ESR 68.

Compatibility: Firefox 62, Firefox ESR 60.2 (Autoplay added in Firefox 74, Firefox ESR 68.6, Autoplay Default/Locked added in Firefox 76, Firefox ESR 68.8)
CCK2 Equivalent: N/A
Preferences Affected: permissions.default.camera,permissions.default.microphone,permissions.default.geo,permissions.default.desktop-notification,media.autoplay.default

Windows (GPO)

Software\Policies\Mozilla\Firefox\Permissions\Camera\Allow\1 = "https://example.org"
Software\Policies\Mozilla\Firefox\Permissions\Camera\Allow\2 = "https://example.org:1234"
Software\Policies\Mozilla\Firefox\Permissions\Camera\Block\1 = "https://example.edu"
Software\Policies\Mozilla\Firefox\Permissions\Camera\BlockNewRequests = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\Permissions\Camera\Locked = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\Permissions\Microphone\Allow\1 = "https://example.org"
Software\Policies\Mozilla\Firefox\Permissions\Microphone\Block\1 = "https://example.edu"
Software\Policies\Mozilla\Firefox\Permissions\Microphone\BlockNewRequests = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\Permissions\Microphone\Locked = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\Permissions\Location\Allow\1 = "https://example.org"
Software\Policies\Mozilla\Firefox\Permissions\Location\Block\1 = "https://example.edu"
Software\Policies\Mozilla\Firefox\Permissions\Location\BlockNewRequests = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\Permissions\Location\Locked = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\Permissions\Notifications\Allow\1 = "https://example.org"
Software\Policies\Mozilla\Firefox\Permissions\Notifications\Block\1 = "https://example.edu"
Software\Policies\Mozilla\Firefox\Permissions\Notifications\BlockNewRequests = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\Permissions\Notifications\Locked = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\Permissions\Autoplay\Allow\1 = "https://example.org"
Software\Policies\Mozilla\Firefox\Permissions\Autoplay\Block\1 = "https://example.edu"
Software\Policies\Mozilla\Firefox\Permissions\Autoplay\Default = "allow-audio-video" | "block-audio" | "block-audio-video"
Software\Policies\Mozilla\Firefox\Permissions\Autoplay\Locked = 0x1 | 0x0

macOS

<dict>
  <key>Permissions</key>
  <dict>
    <key>Camera</key>
    <dict>
      <key>Allow</key>
      <array>
        <string>https://example.org</string>
        <string>https://example.org:1234</string>
      </array>
      <key>Block</key>
      <array>
        <string>https://example.edu</string>
      </array>
      <key>BlockNewRequests</key>
      <true/> | <false/>
      <key>Locked</key>
      <true/> | <false/>
    </dict>
    <key>Microphone</key>
    <dict>
      <key>Allow</key>
      <array>
        <string>https://example.org</string>
      </array>
      <key>Block</key>
      <array>
        <string>https://example.edu</string>
      </array>
      <key>BlockNewRequests</key>
      <true/> | <false/>
      <key>Locked</key>
      <true/> | <false/>
    </dict>
    <key>Location</key>
    <dict>
      <key>Allow</key>
      <array>
        <string>https://example.org</string>
      </array>
      <key>Block</key>
      <array>
        <string>https://example.edu</string>
      </array>
      <key>BlockNewRequests</key>
      <true/> | <false/>
      <key>Locked</key>
      <true/> | <false/>
    </dict>
    <key>Notifications</key>
    <dict>
      <key>Allow</key>
      <array>
        <string>https://example.org</string>
      </array>
      <key>Block</key>
      <array>
        <string>https://example.edu</string>
      </array>
      <key>BlockNewRequests</key>
      <true/>
      <key>Locked</key>
      <true/>
    </dict>
    <key>Autoplay</key>
    <dict>
      <key>Allow</key>
      <array>
        <string>https://example.org</string>
      </array>
      <key>Block</key>
      <array>
        <string>https://example.edu</string>
      </array>
      <key>Default</key>
      <string>allow-audio-video | block-audio | block-audio-video</string>
      <key>Locked</key>
      <true/> | <false/>
    </dict>
  </dict>
</dict>

policies.json

{
  "policies": {
    "Permissions": {
      "Camera": {
        "Allow": ["https://example.org","https://example.org:1234"],
        "Block": ["https://example.edu"],
        "BlockNewRequests": true | false,
        "Locked": true | false
      },
      "Microphone": {
        "Allow": ["https://example.org"],
        "Block": ["https://example.edu"],
        "BlockNewRequests": true | false,
        "Locked": true | false
      },
      "Location": {
        "Allow": ["https://example.org"],
        "Block": ["https://example.edu"],
        "BlockNewRequests": true | false,
        "Locked": true | false
      },
      "Notifications": {
        "Allow": ["https://example.org"],
        "Block": ["https://example.edu"],
        "BlockNewRequests": true | false,
        "Locked": true | false
      },
      "Autoplay": {
        "Allow": ["https://example.org"],
        "Block": ["https://example.edu"],
        "Default": "allow-audio-video" | "block-audio" | "block-audio-video",
        "Locked": true | false
      }
    }
  }
}

PopupBlocking

Configure the default pop-up window policy as well as origins for which pop-up windows are allowed.

Allow is a list of origins where popup-windows are allowed.

Default determines whether or not pop-up windows are allowed by default.

Locked prevents the user from changing pop-up preferences.

Compatibility: Firefox 60, Firefox ESR 60
CCK2 Equivalent: permissions.popup
Preferences Affected: dom.disable_open_during_load

Windows (GPO)

Software\Policies\Mozilla\Firefox\PopupBlocking\Allow\1 = "https://example.org"
Software\Policies\Mozilla\Firefox\PopupBlocking\Allow\2 = "https://example.edu"
Software\Policies\Mozilla\Firefox\PopupBlocking\Default = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\PopupBlocking\Locked = 0x1 | 0x0

macOS

<dict>
  <key>PopupBlocking</key>
  <dict>
    <key>Allow</key>
    <array>
      <string>http://example.org</string>
      <string>http://example.edu</string>
    </array>
    <key>Default</key>
    <true/> | <false/>
    <key>Locked</key>
    <true/> | <false/>
  </dict>
</dict>

policies.json

{
  "policies": {
    "PopupBlocking": {
      "Allow": ["http://example.org/",
                "http://example.edu/"],
      "Default": true | false,
      "Locked": true | false
    }
  }
}

Preferences

Set and lock certain preferences.

Compatibility: See below
CCK2 Equivalent: preferences
Preferences Affected: See below

Preference	Type	Compatibility	Default
accessibility.force_disabled	integer	Firefox 70, Firefox ESR 68.2	0
If set to 1, platform accessibility is disabled.
app.update.auto (Deprecated - Switch to AppAutoUpdate policy)	boolean	Firefox 68, Firefox ESR 68	true
If false, Firefox doesn't automatically install update.
browser.bookmarks.autoExportHTML	boolean	Firefox 70, Firefox ESR 68.2	false
If true, bookmarks are exported on shutdown.
browser.bookmarks.file	string	Firefox 70, Firefox ESR 68.2	N/A
If set, the name of the file where bookmarks are exported and imported.
browser.bookmarks.restore_default_bookmarks	boolean	Firefox 70, Firefox ESR 68.2	N/A
If true, bookmarks are restored to their defaults.
browser.cache.disk.enable	boolean	Firefox 68, Firefox ESR 68	true
If false, don't store cache on the hard drive.
browser.cache.disk.parent_directory	string	Firefox 68, Firefox ESR 68	Profile temporary directory
If set, changes the location of the disk cache. This policy doesn't work. It's being worked on.
browser.fixup.dns_first_for_single_words	boolean	Firefox 68, Firefox ESR 68	false
If true, single words are sent to DNS, not directly to search.
browser.newtabpage.activity-stream.default.sites	string	Firefox 72, ESR 68.4	Locale dependent
If set, a list of URLs to use as the default top sites on the new tab page.
browser.places.importBookmarksHTML	boolean	Firefox 70, Firefox ESR 68.2
If true, bookmarks are always imported on startup.
browser.safebrowsing.phishing.enabled	boolean	Firefox 70, Firefox ESR 68.2	true
If false, phishing protection is not enabled (Not recommended)
browser.safebrowsing.malware.enabled	boolean	Firefox 70, Firefox ESR 68.2	true
If false, malware protection is not enabled (Not recommended)
browser.search.update	boolean	Firefox 68, Firefox ESR 68	true
If false, updates for search engines are not checked.
browser.slowStartup.notificationDisabled	boolean	Firefox 70, Firefox ESR 68.2	false
If true, a notification isn't shown if startup is slow.
browser.tabs.warnOnClose	boolean	Firefox 68, Firefox ESR 68	true
If false, there is no warning when the browser is closed.
browser.taskbar.previews.enable	boolean	Firefox 70, Firefox ESR 68.2 (Windows only)	false
If true, tab previews are shown in the Windows taskbar.
browser.urlbar.suggest.bookmark	boolean	Firefox 68, Firefox ESR 68	true
If false, bookmarks aren't suggested when typing in the URL bar.
browser.urlbar.suggest.history	boolean	Firefox 68, Firefox ESR 68	true
If false, history isn't suggested when typing in the URL bar.
browser.urlbar.suggest.openpage	boolean	Firefox 68, Firefox ESR 68	true
If false, open tabs aren't suggested when typing in the URL bar.
datareporting.policy.dataSubmissionPolicyBypassNotification	boolean	Firefox 68, Firefox ESR 68	false
If true, don't show the privacy policy tab on first run.
dom.allow_scripts_to_close_windows	boolean	Firefox 70, Firefox ESR 68.2	false
If false, web page can close windows.
dom.disable_window_flip	boolean	Firefox 68, Firefox ESR 68	true
If false, web pages can focus and activate windows.
dom.disable_window_move_resize	boolean	Firefox 68, Firefox ESR 68	false
If true, web pages can't move or resize windows.
dom.event.contextmenu.enabled	boolean	Firefox 68, Firefox ESR 68	true
If false, web pages can't override context menus.
dom.keyboardevent.keypress.hack.dispatch_non_printable_keys.addl	string	Firefox 68, Firefox ESR 68	N/A
See https://support.mozilla.org/en-US/kb/dom-events-changes-introduced-firefox-66
dom.keyboardevent.keypress.hack.use_legacy_keycode_and_charcode.addl	string	Firefox 68, Firefox ESR 68	N/A
See https://support.mozilla.org/en-US/kb/dom-events-changes-introduced-firefox-66
dom.xmldocument.load.enabled	boolean	Firefox ESR 68.5	true.
If false, XMLDocument.load is not available.
dom.xmldocument.async.enabled	boolean	Firefox ESR 68.5	true
If false, XMLDocument.async is not available.
extensions.blocklist.enabled	boolean	Firefox 70, Firefox ESR 68.2	true
If false, the extensions blocklist is not used (Not recommended)
extensions.getAddons.showPane	boolean	Firefox 68, Firefox ESR 68	N/A
If false, the Recommendations tab is not displayed in the Add-ons Manager.
extensions.htmlaboutaddons.recommendations.enabled	boolean	Firefox 72, Firefox ESR 68.4	true
If false, recommendations are not shown on the Extensions tab in the Add-ons Manager.
geo.enabled	boolean	Firefox 70, Firefox ESR 68.2	true
If false, the geolocation API is disabled.	Language dependent
intl.accept_languages	string	Firefox 70, Firefox ESR 68.2
If set, preferred language for web pages.
media.eme.enabled	boolean	Firefox 70, Firefox ESR 68.2	true
If false, Encrypted Media Extensions are not enabled.
media.gmp-gmpopenh264.enabled	boolean	Firefox 68, Firefox ESR 68	true
If false, the OpenH264 plugin is not downloaded.
media.gmp-widevinecdm.enabled	boolean	Firefox 68, Firefox ESR 68	true
If false, the Widevine plugin is not downloaded.
media.peerconnection.enabled	boolean	Firefox 72, Firefox ESR 68.4	true
If false, WebRTC is disabled
media.peerconnection.ice.obfuscate_host_addresses.whitelist	string	Firefox 72, Firefox ESR 68.4	N/A
If set, a list of domains for which mDNS hostname obfuscation is
disabled
network.dns.disableIPv6	boolean	Firefox 68, Firefox ESR 68	false
If true, IPv6 DNS lokoups are disabled.
network.IDN_show_punycode	boolean	Firefox 68, Firefox ESR 68	false
If true, display the punycode version of internationalized domain names.
places.history.enabled	boolean	Firefox 68, Firefox ESR 68	true
If false, history is not enabled.
print.save_print_settings	boolean	Firefox 70, Firefox ESR 68.2	true
If false, print settings are not saved between jobs.
security.default_personal_cert	string	Firefox 68, Firefox ESR 68	Ask Every Time
If set to Select Automatically, Firefox automatically chooses the default personal certificate.
security.mixed_content.block_active_content	boolean	Firefox 70, Firefox ESR 68.2	true
If false, mixed active content (HTTP and HTTPS) is not blocked.
security.osclientcerts.autoload	boolean	Firefox 72 (Windows), Firefox 75 (macOS)	false
If true, client certificates are loaded from the operating system certificate store.
security.ssl.errorReporting.enabled	boolean	Firefox 68, Firefox ESR 68	true
If false, SSL errors cannot be sent to Mozilla.
security.tls.hello_downgrade_check	boolean	Firefox 72, Firefox ESR 68.4	true
If false, the TLS 1.3 downgrade check is disabled.
ui.key.menuAccessKeyFocuses	boolean	Firefox 68, Firefox ESR 68	true
If false, the Alt key doesn't show the menubar on Windows.
widget.content.gtk-theme-override	string	Firefox 72, Firefox ESR 68.4 (Linux only)	N/A
If set, overrides the GTK theme for widgets.

Windows (GPO)

Software\Policies\Mozilla\Firefox\Preferences\boolean_preference_name = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\Preferences\string_preference_name = "string_value"

macOS

<dict>
  <key>Preferences</key>
  <dict>
    <key>boolean_preference_name</key>
    <true/> | <false/>
    <key>string_preference_name</key>
    <string>string_value</string>
  </dict>
</dict>

policies.json

{
  "policies": {
    "Preferences": {
      "boolean_preference_name": true | false,
      "string_preference_name": "string_value"
    }
  }
}

PromptForDownloadLocation

Ask where to save each file before downloading.

Compatibility: Firefox 68, Firefox ESR 68
CCK2 Equivalent: N/A
Preferences Affected: browser.download.useDownloadDir

Windows (GPO)

Software\Policies\Mozilla\Firefox\PromptForDownloadLocation = 0x1 | 0x0

macOS

<dict>
  <key>PromptForDownloadLocation</key>
  <true/> | <false/>
</dict>

policies.json

{
  "policies": {
    "PromptForDownloadLocation": true | false
  }
}

Proxy

Configure proxy settings. These settings correspond to the connection settings in Firefox preferences. To specify ports, append them to the hostnames with a colon (:).

Mode is the proxy method being used.

Locked is whether or not proxy settings can be changed.

HTTPProxy is the HTTP proxy server.

UseHTTPProxyForAllProtocols is whether or not the HTTP proxy should be used for all other proxies.

SSLProxy is the SSL proxy server.

FTPProxy is the FTP proxy server.

SOCKSProxy is the SOCKS proxy server

SOCKSVersion is the SOCKS version (4 or 5)

Passthrough is list of hostnames or IP addresses that will not be proxied. Use <local> to bypass proxying for all hostnames which do not contain periods.

AutoConfigURL is a URL for proxy configuration (only used if Mode is autoConfig).

AutoLogin means do not prompt for authentication if password is saved.

UseProxyForDNS to use proxy DNS when using SOCKS v5.

Compatibility: Firefox 60, Firefox ESR 60
CCK2 Equivalent: networkProxy*
Preferences Affected: network.proxy.type,network.proxy.autoconfig_url,network.proxy.socks_remote_dns,signon.autologin.proxy,network.proxy.socks_version,network.proxy.no_proxies_on,network.proxy.share_proxy_settings,network.proxy.http,network.proxy.http_port,network.proxy.ftp,network.proxy.ftp_port,network.proxy.ssl,network.proxy.ssl_port,network.proxy.socks,network.proxy.socks_port

Windows (GPO)

Software\Policies\Mozilla\Firefox\Proxy\Mode = "none", "system", "manual", "autoDetect", "autoConfig"
Software\Policies\Mozilla\Firefox\Proxy\Locked = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\=Proxy\HTTPProxy = https://httpproxy.example.com
Software\Policies\Mozilla\Firefox\Proxy\UseHTTPProxyForAllProtocols = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\Proxy\SSLProxy = https://sslproxy.example.com
Software\Policies\Mozilla\Firefox\Proxy\FTPProxy = https://ftpproxy.example.com
Software\Policies\Mozilla\Firefox\Proxy\SOCKSProxy = https://socksproxy.example.com
Software\Policies\Mozilla\Firefox\Proxy\SOCKSVersion = 0x4 | 0x5
Software\Policies\Mozilla\Firefox\Proxy\Passthrough = <local>
Software\Policies\Mozilla\Firefox\Proxy\AutoConfigURL = URL_TO_AUTOCONFIG
Software\Policies\Mozilla\Firefox\Proxy\AutoLogin = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\Proxy\UseProxyForDNS = 0x1 | 0x0

macOS

<dict>
  <key>Proxy</key>
  <dict>
    <key>Mode</key>
    <string>none | system | manual | autoDetect | autoConfig</string>
    <key>Locked</key>
    <true> | </false>
    <key>HTTPProxy</key>
    <string>https://httpproxy.example.com</string>
    <key>UseHTTPProxyForAllProtocols</key>
    <true> | </false>
    <key>SSLProxy</key>
    <string>https://sslproxy.example.com</string>
    <key>FTPProxy</key>
    <string>https://ftpproxy.example.com</string>
    <key>SOCKSProxy</key>
    <string>https://socksproxy.example.com</string>
    <key>SOCKSVersion</key>
    <string>4 | 5</string>
    <key>Passthrough</key>
    <string>&lt;local>&gt;</string>
    <key>AutoConfigURL</key>
    <string>URL_TO_AUTOCONFIG</string>
    <key>AutoLogin</key>
    <true> | </false>
    <key>UseProxyForDNS</key>
    <true> | </false>
  </dict>
</dict>

policies.json

{
  "policies": {
    "Proxy": {
      "Mode": "none", "system", "manual", "autoDetect", "autoConfig",
      "Locked": [true, false],
      "HTTPProxy": "hostname",
      "UseHTTPProxyForAllProtocols": [true, false],
      "SSLProxy": "hostname",
      "FTPProxy": "hostname",
      "SOCKSProxy": "hostname",
      "SOCKSVersion": 4 | 5
      "Passthrough": "<local>",
      "AutoConfigURL": "URL_TO_AUTOCONFIG",
      "AutoLogin":  [true, false],
      "UseProxyForDNS": [true, false]
    }
  }
}

RequestedLocales

Set the the list of requested locales for the application in order of preference. It will cause the corresponding language pack to become active.

Note: For Firefox 68, this can now be a string so that you can specify an empty value.

Compatibility: Firefox 64, Firefox ESR 60.4, Updated in Firefox 68, Firefox ESR 68
CCK2 Equivalent: N/A
Preferences Affected: N/A

Windows (GPO)

Software\Policies\Mozilla\Firefox\RequestedLocales\1 = "de"
Software\Policies\Mozilla\Firefox\RequestedLocales\2 = "en-US"

or

Software\Policies\Mozilla\Firefox\RequestedLocales = "de,en-US"

macOS

<dict>
  <key>RequestedLocales</key>
  <array>
    <string>de</string>
    <string>en-US</string>
  </array>
</dict>

or

<dict>
  <key>RequestedLocales</key>
  <string>de,en-US</string>
</dict>

policies.json

{
  "policies": {
    "RequestedLocales": ["de", "en-US"]
  }
}

or

{
  "policies": {
    "RequestedLocales": "de,en-US"
  }
}

SanitizeOnShutdown (Selective)

Clear data on shutdown. Choose from Cache, Cookies, Download History, Form & Search History, Browsing History, Active Logins, Site Preferences and Offline Website Data.

Previously, these values were always locked. Starting with Firefox 74 and Firefox ESR 68.6, you can use the Locked option to either keep the values unlocked (set it to false), or lock only the values you set (set it to true). If you want the old behavior of locking everything, do not set Locked at all.

Compatibility: Firefox 68, Firefox ESR 68 (Locked added in 74/68.6)
CCK2 Equivalent: N/A
Preferences Affected: privacy.sanitize.sanitizeOnShutdown,privacy.clearOnShutdown.cache,privacy.clearOnShutdown.cookies,privacy.clearOnShutdown.downloads,privacy.clearOnShutdown.formdata,privacy.clearOnShutdown.history,privacy.clearOnShutdown.sessions,privacy.clearOnShutdown.siteSettings,privacy.clearOnShutdown.offlineApps

Windows (GPO)

Software\Policies\Mozilla\Firefox\SanitizeOnShutdown\Cache = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\SanitizeOnShutdown\Cookies = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\SanitizeOnShutdown\Downloads = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\SanitizeOnShutdown\FormData = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\SanitizeOnShutdown\History = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\SanitizeOnShutdown\Sessions = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\SanitizeOnShutdown\SiteSettings = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\SanitizeOnShutdown\OfflineApps = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\SanitizeOnShutdown\Locked = 0x1 | 0x0

macOS

<dict>
  <key>SanitizeOnShutdown</key>
  <dict>
    <key>Cache</key>
    <true/> | <false/>
    <key>Cookies</key>
    <true/> | <false/>
    <key>Downloads</key>
    <true/> | <false/>
    <key>FormData</key>
    <true/> | <false/>
    <key>History</key>
    <true/> | <false/>
    <key>Sessions</key>
    <true/> | <false/>
    <key>SiteSettings</key>
    <true/> | <false/>
    <key>OfflineApps</key>
    <true/> | <false/>
    <key>Locked</key>
    <true/> | <false/>
  </dict>
</dict>

policies.json

{
  "policies": {
    "SanitizeOnShutdown": {
      "Cache": true | false,
      "Cookies": true | false,
      "Downloads": true | false,
      "FormData": true | false,
      "History": true | false,
      "Sessions": true | false,
      "SiteSettings": true | false,
      "OfflineApps": true | false,
      "Locked": true | false
    }
  }
}

SanitizeOnShutdown (All)

Clear all data on shutdown, including Browsing & Download History, Cookies, Active Logins, Cache, Form & Search History, Site Preferences and Offline Website Data.

Compatibility: Firefox 60, Firefox ESR 60
CCK2 Equivalent: N/A
Preferences Affected: privacy.sanitize.sanitizeOnShutdown,privacy.clearOnShutdown.cache,privacy.clearOnShutdown.cookies,privacy.clearOnShutdown.downloads,privacy.clearOnShutdown.formdata,privacy.clearOnShutdown.history,privacy.clearOnShutdown.sessions,privacy.clearOnShutdown.siteSettings,privacy.clearOnShutdown.offlineApps

Windows (GPO)

Software\Policies\Mozilla\Firefox\SanitizeOnShutdown = 0x1 | 0x0

macOS

<dict>
  <key>SanitizeOnShutdown</key>
  <true/> | <false/>
</dict>

policies.json

{
  "policies": {
    "SanitizeOnShutdown": true | false
  }
}

SearchBar

Set whether or not search bar is displayed.

Compatibility: Firefox 60, Firefox ESR 60
CCK2 Equivalent: showSearchBar
Preferences Affected: N/A

Windows (GPO)

Software\Policies\Mozilla\Firefox\SearchBar = "unified" | "separate"

macOS

<dict>
  <key>SearchBar</key>
  <string>unified | separate</string>
</dict>

policies.json

{
  "policies": {
    "SearchBar": "unified" | "separate"
  }
}

SearchEngines (This policy is only available on the ESR.)

SearchEngines | Default

Set the default search engine. This policy is only available on the ESR.

Compatibility: Firefox ESR 60
CCK2 Equivalent: defaultSearchEngine
Preferences Affected: N/A

Windows (GPO)

Software\Policies\Mozilla\Firefox\SearchEngines\Default = NAME_OF_SEARCH_ENGINE

macOS

<dict>
  <key>SearchEngines</key>
  <dict>
    <key>Default</key>
    <string>NAME_OF_SEARCH_ENGINE</string>
  </dict>
</dict>

policies.json

{
  "policies": {
    "SearchEngines": {
      "Default": "NAME_OF_SEARCH_ENGINE"
    }
  }
}

SearchEngines | PreventInstalls

Prevent installing search engines from webpages.

Compatibility: Firefox ESR 60
CCK2 Equivalent: disableSearchEngineInstall
Preferences Affected: N/A

Windows (GPO)

Software\Policies\Mozilla\Firefox\SearchEngines\PreventInstalls = 0x1 | 0x0

macOS

<dict>
  <key>SearchEngines</key>
  <dict>
    <key>PreventInstalls</key>
    <true/> | <false/>
  </dict>
</dict>

policies.json

{
  "policies": {
    "SearchEngines": {
      "PreventInstalls": true | false
    }
  }
}

SearchEngines | Remove

Hide built-in search engines. This policy is only available on the ESR.

Compatibility: Firefox ESR 60.2
CCK2 Equivalent: removeDefaultSearchEngines (removed all built-in engines)
Preferences Affected: N/A

Windows (GPO)

Software\Policies\Mozilla\Firefox\SearchEngines\Remove\1 = NAME_OF_SEARCH_ENGINE

macOS

<dict>
  <key>SearchEngines</key>
  <dict>
    <key>Remove</key>
    <array>
      <string>NAME_OF_SEARCH_ENGINE</string>
    </array>
  </dict>
</dict>

policies.json

{
  "policies": {
    "SearchEngines": {
      "Remove": ["NAME_OF_SEARCH_ENGINE"]
    }
  }
}

SearchEngines | Add

Add new search engines (up to five). This policy is only available on the ESR. Name and URLTemplate are required.

Name is the name of the search engine.

URLTemplate is the search URL with {searchTerms} to substitute for the search term.

Method is either GET or POST

IconURL is a URL for the icon to use.

Alias is a keyword to use for the engine.

Description is a description of the search engine.

PostData is the POST data as name value pairs separated by &.

SuggestURLTemplate is a search suggestions URL with {searchTerms} to substitute for the search term.

Compatibility: Firefox ESR 60 (POST support in Firefox ESR 68)
CCK2 Equivalent: searchplugins
Preferences Affected: N/A

Windows (GPO)

Software\Policies\Mozilla\Firefox\SearchEngines\Add\1\Name = "Example1"
Software\Policies\Mozilla\Firefox\SearchEngines\Add\1\URLTemplate = "https://www.example.org/q={searchTerms}"
Software\Policies\Mozilla\Firefox\SearchEngines\Add\1\Method = "GET" | "POST"
Software\Policies\Mozilla\Firefox\SearchEngines\Add\1\IconURL = "https://www.example.org/favicon.ico"
Software\Policies\Mozilla\Firefox\SearchEngines\Add\1\Alias = "example"
Software\Policies\Mozilla\Firefox\SearchEngines\Add\1\Description = "Example Description"
Software\Policies\Mozilla\Firefox\SearchEngines\Add\1\SuggestURLTemplate = "https://www.example.org/suggestions/q={searchTerms}"
Software\Policies\Mozilla\Firefox\SearchEngines\Add\1\PostData = "name=value&q={searchTerms}"

macOS

<dict>
  <key>SearchEngines</key>
  <dict>
    <key>Add</key>
    <array>
      <dict>
        <key>Name</key>
        <string>Example1</string>
        <key>URLTemplate</key>
        <string>https://www.example.org/q={searchTerms}</string>
        <key>Method</key>
        <string>GET | POST </string>
        <key>IconURL</key>
        <string>https://www.example.org/favicon.ico</string>
        <key>Alias</key>
        <string>example</string>
        <key>Description</key>
        <string>Example Description</string>
        <key>SuggestURLTemplate</key>
        <string>https://www.example.org/suggestions/q={searchTerms}</string>
        <key>PostData</key>
        <string>name=value&q={searchTerms}</string>
      </dict>
    <array>
  </dict>
</dict>

policies.json

{
  "policies": {
    "SearchEngines": {
      "Add": [
        {
          "Name": "Example1",
          "URLTemplate": "https://www.example.org/q={searchTerms}",
          "Method": "GET" | "POST",
          "IconURL": "https://www.example.org/favicon.ico",
          "Alias": "example",
          "Description": "Description",
          "PostData": "name=value&q={searchTerms}",
          "SuggestURLTemplate": "https://www.example.org/suggestions/q={searchTerms}"
        }
      ]
    }
  }
}

SearchSuggestEnabled

Enable search suggestions.

Compatibility: Firefox 68, Firefox ESR 68
CCK2 Equivalent: N/A
Preferences Affected: browser.urlbar.suggest.searches,browser.search.suggest.enabled

Windows (GPO)

Software\Policies\Mozilla\Firefox\SearchSuggestEnabled = 0x1 | 0x0

macOS

<dict>
  <key>SearchSuggestEnabled</key>
  <true/> | <false/>
</dict>

policies.json

{
  "policies": {
    "SearchSuggestEnabled": true | false
  }
}

SecurityDevices

Install PKCS #11 modules.

Compatibility: Firefox 64, Firefox ESR 60.4
CCK2 Equivalent: certs.devices
Preferences Affected: N/A

Windows (GPO)

Software\Policies\Mozilla\Firefox\SecurityDevices\NAME_OF_DEVICE = PATH_TO_LIBRARY_FOR_DEVICE

macOS

<dict>
  <key>SecurityDevices</key>
  <dict>
    <key>NAME_OF_DEVICE</key>
    <string>PATH_TO_LIBRARY_FOR_DEVICE</string>
  </dict>
</dict>

policies.json

{
  "policies": {
    "SecurityDevices": {
      "NAME_OF_DEVICE": "PATH_TO_LIBRARY_FOR_DEVICE"
    }
  }
}

SSLVersionMax

Set and lock the maximum version of TLS.

Compatibility: Firefox 66, Firefox ESR 60.6
CCK2 Equivalent: N/A
Preferences Affected: security.tls.version.max

Windows (GPO)

Software\Policies\Mozilla\Firefox\SSLVersionMax = "tls1" | "tls1.1" | "tls1.2" | "tls1.3"

macOS

<dict>
  <key>SSLVersionMax</key>
  <string>tls1 | tls1.1 | tls1.2 | tls1.3</string>
</dict>

policies.json

{
  "policies": {
    "SSLVersionMax": "tls1" | "tls1.1" | "tls1.2" | "tls1.3"
  }
}

SSLVersionMin

Set and lock the minimum version of TLS.

Compatibility: Firefox 66, Firefox ESR 60.6
CCK2 Equivalent: N/A
Preferences Affected: security.tls.version.min

Windows (GPO)

Software\Policies\Mozilla\Firefox\SSLVersionMin = "tls1" | "tls1.1" | "tls1.2" | "tls1.3"

macOS

<dict>
  <key>SSLVersionMin</key>
  <string>tls1 | tls1.1 | tls1.2 | tls1.3</string>
</dict>

policies.json

{
  "policies": {
    "SSLVersionMin": "tls1" | "tls1.1" | "tls1.2" | "tls1.3"
  }
}

SupportMenu

Add a menuitem to the help menu for specifying support information.

Compatibility: Firefox 68.0.1, Firefox ESR 68.0.1
CCK2 Equivalent: helpMenu
Preferences Affected: N/A

Windows (GPO)

Software\Policies\Mozilla\Firefox\SupportMenu\Title = "Support Menu"
Software\Policies\Mozilla\Firefox\SupportMenu\URL = "http://example.com/support"
Software\Policies\Mozilla\Firefox\SupportMenu\AccessKey = "S"

macOS

<dict>
  <key>SupportMenu</key>
  <dict>
    <key>Title</key>
    <string>SupportMenu</string>
    <key>URL</key>
    <string>http://example.com/support</string>
    <key>AccessKey</key>
    <string>S</string>
  </dict>
</dict>

policies.json

{
  "policies": {
    "SupportMenu": {
      "Title": "Support Menu",
      "URL": "http://example.com/support",
      "AccessKey": "S"
    }
  }
}

UserMessaging

Prevent installing search engines from webpages.

WhatsNew Remove the "What's New" icon and menuitem. (Firefox 75 only)

ExtensionRecommendations Don't recommend extensions.

FeatureRecommendations Don't recommend browser features.

UrlbarInterventions Don't offer Firefox specific suggestions in the URL bar. (Firefox 75 only)

Compatibility: Firefox 75, Firefox ESR 68.7
CCK2 Equivalent: N/A
Preferences Affected: browser.messaging-system.whatsNewPanel.enabled,browser.newtabpage.activity-stream.asrouter.userprefs.cfr.addons,browser.newtabpage.activity-stream.asrouter.userprefs.cfr.features

Windows (GPO)

Software\Policies\Mozilla\Firefox\UserMessaging\WhatsNew = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\UserMessaging\ExtensionRecommendations = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\UserMessaging\FeatureRecommendations = 0x1 | 0x0
Software\Policies\Mozilla\Firefox\UserMessaging\UrlbarInterventions = 0x1 | 0x0

macOS

<dict>
  <key>UserMessaging</key>
  <dict>
    <key>WhatsNew</key>
    <true/> | <false/>
    <key>ExtensionRecommendations</key>
    <true/> | <false/>
    <key>FeatureRecommendations</key>
    <true/> | <false/>
    <key>UrlbarInterventions</key>
    <true/> | <false/>
  </dict>
</dict>

policies.json

{
  "policies": {
    "UserMessaging": {
      "WhatsNew": true | false,
      "ExtensionRecommendations": true | false,
      "FeatureRecommendations": true | false,
      "UrlbarInterventions": true | false
    }
  }
}

WebsiteFilter

Block websites from being visited. The parameters take an array of Match Patterns, as documented in https://developer.mozilla.org/en-US/Add-ons/WebExtensions/Match_patterns. Only http/https addresses are supported at the moment. The arrays are limited to 1000 entries each.

Compatibility: Firefox 60, Firefox ESR 60
CCK2 Equivalent: N/A
Preferences Affected: N/A

Windows (GPO)

Software\Policies\Mozilla\Firefox\WebsiteFilter\Block\1 = "<all_urls>"
Software\Policies\Mozilla\Firefox\WebsiteFilter\Exceptions\1 = "http://example.org/*"

macOS

<dict>
  <key>WebsiteFilter</key>
  <dict>
    <key>Block</key>
    <array>
      <string><all_urls></string>
    </array>
    <key>Exceptions</key>
    <array>
      <string>http://example.org/*</string>
    </array>
  </dict>

</dict>

policies.json

{
  "policies": {
    "WebsiteFilter": {
      "Block": ["<all_urls>"],
      "Exceptions": ["http://example.org/*"]
    }
  }
}