Running the script on a non-US Windows box doesn't work

[1989gironimo]

You have to replace
:: Check if the script is running in a high integrity context whoami /groups | findstr /i /c:"high level Mandatory" >nul && ( goto main

to

:: Check if the script is running in a high integrity context whoami /groups | findstr /i /c:"Administrator" >nul && ( goto main

[sagishahar]

Thanks for your suggestion and sorry it took a very long time to respond.

Unfortunately, your suggestion will cause similar issue to non-US Windows as the Administrator account name can be localized. For example, French-based Windows would have Administrateur rather than Administrator.

Please see this for more information: https://social.technet.microsoft.com/wiki/contents/articles/13813.localized-names-for-administrator-account-in-windows.aspx