This simple batch script uses Microsoft Teams module for powershell to add people to teams using a csv.

Update 15.08.2020

Now you can run the powershell.ps1 script which will take care of the module installation and login for you. Or else you can use the same script.bat file.

Prerequisites

In your search bar in Windows 10 or in your Start button, search for PowerShell. Select the Windows PowerShell app and right click and Run as administrator.
Then you need to install Microsoft Teams module in Powershell. This allows us to manipulate teams with command lines. Type following command in your powershell window.
```
  Install-Module -Name MicrosoftTeams
```
Command will prompt for installation confirmation. Select yes to all and proceed.
If you do not see any errors, you are good to go.
Then, we need to login to MS Teams using Powershell.
```
  Connect-MicrosoftTeams
```
This will popup an login window and you need to login with the correct teams account.

Running the Script

You need following information before running the script.

Group ID of the team.

You can run
```
  Get-Team    
```
command to find all the group IDs of your teams.

Else you can get the teams invite link from teams UI. You can find the group Id in the URL parameters.
Create a csv (comma seperated values) file.

The simplest way to achieve this is to open a notepad and type following

email
abc@test.com
cde@test.com
fgh@test.com

then save that in .csv format. For this example I am going to save it as myemails.csv

damithc/MSTeamsBulkUser

Update 15.08.2020

Prerequisites

Running the Script

Group ID of the team.

Create a csv (comma seperated values) file.

You can run the script.bat now