Microsoft is resolving a known issue that causes "couldn't connect" errors when launching the Microsoft Teams desktop and web ...

Here is how to fix Microsoft Teams error CAA20002 ptoperly. You need to reconnect your Microsoft Teams account, clear Teams cache files, etc.

Method 3: Uninstall then reinstall the Microsoft Teams app to fix cannot login issue Sometimes this problem can already be caused by a corrupted app file.

If you see Microsoft Teams Error CAA5004B when you try to sign in, follow the solutions mentioned below to resolve the issue successfully.