Can you try the same process in the web URL - https://teams.microsoft.com using a InPrivate Window?
Or you can try to clear the cache the standard fix should work,
- Fully exit the Microsoft Teams desktop client. To do this, either right click Teams from the Icon Tray and select ‘Quit’, or run Task Manager and fully kill the process.
- Go to File Explorer, and type in %appdata%\Microsoft\teams.
- Once in the directory, remove all the files and restart Teams.
Try the switch option again.
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