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mobernberger/block-guest-for-specific-o365group.ps1

Last active March 21, 2020 17:10
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With this script/commandlet you could block/allow external guests to specific Office 365 group
Raw
block-guest-for-specific-o365group.ps1
#Connect to Azure AD Powershell with the Preview Module: Install-Module AzureADPreview
#Search for specific group
$GroupID = get-unifiedgroup -Identity <Insert SMTP or Identity> | Select-Object -ExpandProperty ExternalDirectoryObjectId
#Check if there is already a specific group settings specified and delete it
$SettingID = Get-AzureADObjectSetting -TargetType Groups -TargetObjectID $GroupID | select-object -expandproperty ID
Remove-azureadobjectsetting -id $settingid -targettype Groups -TargetObjectID $GroupID
#Create a new setting with Guests disabled
$template = Get-AzureADDirectorySettingTemplate | Where-Object {$_.displayname -eq "group.unified.guest"}
$settingsCopy = $template.CreateDirectorySetting()
$settingsCopy["AllowToAddGuests"]=$False
New-AzureADObjectSetting -TargetType Groups -TargetObjectId $groupID -DirectorySetting $settingsCopy
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