WhatIfO365

  To add a user to a set of teams and all channels in those teams from PowerShell, you can use the Microsoft Teams PowerShell module. Here's an example script that you can modify to suit your needs: # Import the Microsoft Teams PowerShell module Import-Module MicrosoftTeams # Set variables for the user and teams $user = "user@contoso.com" $teams = "Team1", "Team2", "Team3" # Connect to Microsoft Teams using your admin credentials Connect-MicrosoftTeams # Loop through each team and add the user to all channels foreach ($team in $teams) {     # Get the team object     $teamObject = Get-Team -DisplayName $team          # Add the user to the team     Add-TeamUser -GroupId $teamObject.GroupId -User $user          # Get all the channels in the team     $channels = Get-TeamChannel -GroupId $teamObject.GroupId          # Loop through each channel and add the user    ...