Could you log in Teams client before?
Does anybody else have the same issue?
You can try to log in the Teams web client(https://teams.microsoft.com) and verify the results.
If it works, it can be said that the issue is mainly on desktop client.
Clear the client cache and try again as below:
- %appdata%\Microsoft\teams\blob_storage
- %appdata%\Microsoft\teams\Cache
- %appdata%\Microsoft\teams\databases
- %appdata%\Microsoft\teams\GPUcache
- %appdata%\Microsoft\teams\IndexedDB
- %appdata%\Microsoft\teams\Local Storage
- %appdata%\Microsoft\teams\tmp
Make sure that your client is the latest version.
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