Hi Jérémie, I'm Roberta and I'm happy to help you today here in Community.
Can you try the solutions below and check if the issue persists?:
- Try Signing out and Signing in.
- Completely uninstall and re-install MS Teams.
https://support.microsoft.com/office/installa-m...
- Clear MS Teams Cache.
https://learn.microsoft.com/microsoftteams/trou...
Then restart your PC (it’s important to restart it for the changes made to take effect) and access https://teams.microsoft.com
at the bottom left is the Teams download icon and reinstall it.
I hope this helps, keep me posted
Kindly
Roberta
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