Hi @CCC ,
What is your Teams client version?
Do you mean this issue can be reproduced in Teams web client?
Are there any guest users in your Teams meeting?
To exclude the client issue, we firstly recommend you clean your Teams client cache file. You can follow these steps:
- Quit Microsoft Teams.
- Cut and paste the following location into File Explorer: %appdata%\Microsoft\Teams
- Delete contents of the entire folder.
- Restart Microsoft Teams.
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