Uses the app export file from the TAC to block all Copilot specific 3rd party apps from the Teams app store.

Block-3rdPartyCopilotTeamsApps.ps1

Connect-MicrosoftTeams

$rows = Import-Csv -Path "C:\_temp\manageAppsPage_manageAppsList_3-31-2025.csv"

foreach( $row in $rows )
{
    if( $row.'Supported on' -notmatch "Copilot" )
    {
        continue
    }

    if( $row.'App type' -match "Microsoft apps|Custom apps" )
    {
        Write-Host "Unblocking app: $($row.Name)"
        $null = Update-M365TeamsApp -Id $row.'App ID' -IsBlocked $false # unblock Microsoft and custom apps
    }
    if( $row.'App type' -match "Third-party apps" )
    {
        Write-Host "Blocking 3rd party app: $($row.Name)"
        $null = Update-M365TeamsApp -Id $row.'App ID' -IsBlocked $true # block non-Microsoft apps
    }
}