Since Aug 22nd we can't save any Side Panel tabs

Copper Contributor

Aug 29, 2025

The threadId is known to the side panel, we don't rely in the meeting link to extract it at all.
I also added in my post a direct call I did with graph using a known threadId with both apps and both failed server side.

To be more precise when the side panel fails to install Teams is doing the following call:

https://teams.microsoft.com/api/chatsvc/amer/v1/threads/19%3Ameeting_XXXXXXXXXXXXXXXXXX%40thread.v2/properties?name=tab%3A%3Axxxxxxxxxxxxxxxx

And fails, server side.

Doing the direct approach then doing a POST to /chats/{threadId}/tabs, also fails. Above you can see a server side bad gateway response from graph when doing exactly what engineering answered:

curl -s -X POST "https://graph.microsoft.com/v1.0/chats/$CHAT_ID/tabs" \
  -H "Authorization: Bearer $ACCESS_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "displayName": "Website - test",
    "email address removed for privacy reasons": "https://graph.microsoft.com/v1.0/appCatalogs/teamsApps/com.microsoft.teamspace.tab.web",
    "configuration": {
      "entityId": null,
      "contentUrl": "https://www.microsoft.com",
      "websiteUrl": "https://www.microsoft.com"
    }
  }' | jq .
{
  "error": {
    "code": "BadGateway",
    "message": "Failed to execute backend request.",
    "innerError": {
      "date": "2025-08-22T04:02:36",
      "request-id": "ece5590e-f23f-4780-a4a6-20c1b2f0d0f3",
      "client-request-id": "ece5590e-f23f-4780-a4a6-20c1b2f0d0f3"
    }
  }
}

Please review the request with this information:

{
  "error": {
    "code": "BadGateway",
    "message": "Failed to execute backend request.",
    "innerError": {
      "date": "2025-08-22T03:36:08",
      "request-id": "b4bbade7-1ea2-46df-a1d9-92cdda9e360b",
      "client-request-id": "b4bbade7-1ea2-46df-a1d9-92cdda9e360b"
    }
  }
}

as it is a direct (manual) graph api call with a correct meeting ThreadId from a personal meeting room (calendar->meet now->🎥 Start meeting) that returned "BadGateway". Same request succeeds if the meeting chat belongs to a scheduled meeting (calendar -> new event -> tick Teams meeting -> join).
I got the chatInfo thread Id the same way from both meetings.

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Since Aug 22nd we can't save any Side Panel tabs

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