How to remove Accepted Senders from O365 Group in PowerShell

Question

Hi,

I'm using PowerShell to edit O365 (Unified Groups).

I'm able to create, and edit (add/remove) members of groups.

I'm also able to add accepted senders to a group.

I failed to remove accepted senders from a group.

I tried using Remove-MgGroupAcceptedSenderByRef or Remove-MgGroupAcceptedSenderDirectoryObjectByRef to no avail.

Function Get-MgGroupAcceptedSender returns:

Id                                                                        DeletedDateTime
--                                                                        ---------------
ba497be7-be1e-4c9a-a375-xxxxxxxxxxxx@eb0e26eb-bfbe-47d2-9e90-zzzzzzzzzzzz 
d0a75484-fa90-4f2d-87a8-yyyyyyyyyyyy@eb0e26eb-bfbe-47d2-9e90-zzzzzzzzzzzz 

Trying to call

Remove-MgGroupAcceptedSenderByRef -GroupId ... -DirecotryObjectId ba497be7-be1e-4c9a-a375-xxxxxxxxxxxx@eb0e26eb-bfbe-47d2-9e90-zzzzzzzzzzzz 

or

Remove-MgGroupAcceptedSenderByRef -GroupId ... -DirecotryObjectId ba497be7-be1e-4c9a-a375-xxxxxxxxxxxx

gives

Remove-MgGroupAcceptedSenderDirectoryObjectByRef_Delete: An internal server error occurred. The operation failed.

Status: 500 (InternalServerError)
ErrorCode: ErrorInternalServerError

Answer 1

I'd recommend using ExO PowerShell for any Exchange-related properties, the Graph implementation is flaky at best. And the Graph SDK for PowerShell adds a layer of autogenerated crap on top of that, it ain't pretty.

If for some reason you must use the Graph SDK for PowerShell, this should work:

Invoke-MgGraphRequest -Uri 'https://graph.microsoft.com/v1.0/groups/efc8f64f-a605-4f39-85ca-d78350b8765d/acceptedSenders/$ref?$id=https://graph.microsoft.com/v1.0/users/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx' -Method DELETE

Where you must provide the id of the object to remove. Do note the use of single quotes.

If the object you with to remove from the accepted senders list is not a user, replace the corresponding reference:

Invoke-MgGraphRequest -Uri 'https://graph.microsoft.com/v1.0/groups/efc8f64f-a605-4f39-85ca-d78350b8765d/acceptedSenders/$ref?$id=https://graph.microsoft.com/v1.0/groups/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx' -Method DELETE