Restrict Users From Creating New Teams in Microsoft Teams

If you have recently adopted the usage for Microsoft Teams, managing Teams within Teams becomes a toungue twister in itself, If you’re concerned about users creating teams or groups that don’t comply with your business standards, perhaps you want this to be delegated to set of mindful power users group.

  1. Create a Group – This could be a Active Directory Synced group or M365 group
  2. Install AzureAD Public Preview – AzureAD PowerShell Module.
  3. Run the below script, replace the value of “<GroupName>” with the name of the group you have created, enter the administrator credentials when prompted
$GroupName = "<GroupName>"
$AllowGroupCreation = $False

Connect-AzureAD

$settingsObjectID = (Get-AzureADDirectorySetting | Where-object -Property Displayname -Value "Group.Unified" -EQ).id
if(!$settingsObjectID)
{
    $template = Get-AzureADDirectorySettingTemplate | Where-object {$_.displayname -eq "group.unified"}
    $settingsCopy = $template.CreateDirectorySetting()
    New-AzureADDirectorySetting -DirectorySetting $settingsCopy
    $settingsObjectID = (Get-AzureADDirectorySetting | Where-object -Property Displayname -Value "Group.Unified" -EQ).id
}

$settingsCopy = Get-AzureADDirectorySetting -Id $settingsObjectID
$settingsCopy["EnableGroupCreation"] = $AllowGroupCreation

if($GroupName)
{
  $settingsCopy["GroupCreationAllowedGroupId"] = (Get-AzureADGroup -SearchString $GroupName).objectid
} else {
$settingsCopy["GroupCreationAllowedGroupId"] = $GroupName
}
Set-AzureADDirectorySetting -Id $settingsObjectID -DirectorySetting $settingsCopy

(Get-AzureADDirectorySetting -Id $settingsObjectID).Values

reference: https://docs.microsoft.com/en-us/microsoft-365/solutions/manage-creation-of-groups?view=o365-worldwide

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