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Guest users removed from Teams Group Chat
Our users are sharing a group chat with an external organization, users were invited by the creator of the group chat. Today all of the external users were removed from the group, we have no idea...
Yes, your assumption is correct: when the creator of a group chat leaves the organization and their account is disabled in Entra ID, it can lead to external users being removed from the chat.
To prevent this from happening again, here are some recommendations:
- Add another internal member to the chat to avoid it being tied to a single owner.
- Use a shared channel instead of a regular group chat for better external access management.
- Check the audit logs in Microsoft Purview and Entra ID to understand exactly what happened.
- Ensure that external access and guest settings in Entra ID allow collaboration without relying on a single user.
Had two years ago something similair. Looked like a glitch ore something. Couldn't find a real cause.
So we made a new group chat. And it didn't happen again.
Just got word back from Microsoft support and Teams product team.
This is expected behavior as a group chat creator is the owner and when his user is disabled or deleted all guest users are removed.