Microsoft Graph Internal Server Error patching group with app permissions for hideFromAddressLists

Ronald van Helden 95

Hi,

Since this morning we are getting errors from microsoft graph when patching a group settings

hideFromAddressLists
hideFromOutlookClients

we haven't changed anything on our side, and this is executed with application permissions. this is the same issue which multiple people commented on that it is occuring again. Existing previous question

The following is part of our logs.

fail: Failed to update group properties (InternalServerError):

{
   "error":{
      "code":"ErrorInternalServerError",
      "message":"An internal server error occurred. The operation failed., Value cannot be null. (Parameter 'tenant')",
      "innerError":{
         "date":"2026-01-07T12:09:58",
         "request-id":"41634dc2-80c8-45b8-933d-aa8cf5f9492c",
         "client-request-id":"30e55dfa-179c-4ccd-9dfa-f928f0013bbc"
      }
   }
}

When sending a patch request with body https://graph.microsoft.com/v1.0/groups/<guid>

{
   "@odata.type":"#microsoft.graph.group",
   "hideFromAddressLists":true,
   "hideFromOutlookClients":false
}

Michael 20

Hi,

we have the same issue since today.

{
  "error": {
    "code": "ErrorInternalServerError",
    "message": "An internal server error occurred. The operation failed., Value cannot be null. (Parameter 'tenant')",
    "innerError": {
      "date": "2026-01-07T12:15:31",
      "request-id": "9703bfb3-49c0-4d2a-b7f2-c77ab0186585",
      "client-request-id": "9703bfb3-49c0-4d2a-b7f2-c77ab0186585"
    }
  }
}

DerekLiu-0736 0 Reputation points

2026-01-07T19:40:25.1866667+00:00

Same issue here. Problem started yesterday.
Michael 20 Reputation points

2026-01-07T21:17:24.69+00:00

I have opened a ticket with Microsoft, the issue is known and is being worked on...
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Ronald van Helden 95 Reputation points

2026-01-08T13:07:36.9466667+00:00

Do you maybe know more about this @Akhil Nasalwai - MSFT since you where involved in the previous issue https://learn.microsoft.com/en-us/answers/questions/2150770/update-group-throws-error-when-updating-hidefromou

This issue is getting quite urgent, it is causing our synchronization software to fail to create sites.
zxBAI D_Amore,Lucca (IT INF) EXTERNAL 0 Reputation points

2026-01-08T19:08:21.5366667+00:00

same here it doesn't work anymore
MartienJacobs-5699 0 Reputation points

2026-01-09T13:13:59.23+00:00

Same issue here !
Sergio Argüello 5 Reputation points

2026-01-09T17:46:15.32+00:00

We’re experiencing the same issue and here’s what we’ve tried so far:

Graph API: PATCH https://graph.microsoft.com/v1.0/groups/$($groupID) → Result: 500 Internal Server Error

Graph PowerShell Module: Update-MgGroup -GroupId $Group.Id -HideFromAddressLists:$true → Result: 500 Internal Server Error

PnP PowerShell Module: Set-PnPMicrosoft365Group -Identity $Group.Id -HideFromAddressLists $true → Result: No errors, but the change doesn’t apply

We haven’t tested yet with the Exchange Online PowerShell module: Set-UnifiedGroup -Identity $Group.Id -HiddenFromAddressListsEnabled:$True

The only method that works so far: Manual modification via https://admin.cloud.microsoft/?#/groups/.
Green, Richard (UK) 0 Reputation points

2026-01-12T17:22:08.0533333+00:00

Same here, we've opened a case as well.
Ronald van Helden 95 Reputation points

2026-01-14T15:50:42.0333333+00:00

The issue is still ongoing but microsoft has confirmed the issue at their side and is reverting a commit. No ETA so far.
Zink, Florian 20 Reputation points

2026-01-27T06:42:21.5033333+00:00

Despite the reports that it looks like the issue has been fixed I can assure you that this is not the case. We can see a greatly decreased error rate but had a job failing on us just now for the same issue.

Additionally, this is not the first time this issue occurred. There was some time last year or the year before that where the same requests failed for the same reason.

Edit: Fixed a typo.

8 answers

Ronald van Helden 95 Reputation points

2026-01-20T09:36:33.44+00:00

They have resolved the issue by reverting a previous change to graph, for us it is working again.
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Maciej Karpinski 0 Reputation points

2026-01-12T13:00:36.49+00:00

We have the same issue since a couple of days
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Sergio Argüello 5 Reputation points

2026-01-09T13:49:41.5966667+00:00
Same issue here. We've tried hiding unified groups from GAL via:
- Graph query: https://graph.microsoft.com/v1.0/groups/$($groupID)
  
  Same 500 internal error
- Graph PowerShell module cmdlet: Update-MgGroup -GroupId $Group.Id -HideFromAddressLists:$true
  
  Same 500 internal error
- PnP PowerShell cmdlet: Set-PnPMicrosoft365Group -Identity $group.Id -HideFromAddressLists $true
  
  No errors, but doesn't work
We haven't tested the Exchange Online cmdlets

The only way it worked was manually thru the GUI from https://admin.cloud.microsoft/?#/groups/
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Microsoft Graph Internal Server Error patching group with app permissions for hideFromAddressLists

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