Hi @Lindsey McDiarmid ,
Do you mean you cannot switch your account to sign in Microsoft Teams?
Have you tried to login in Teams web client?
To exclude the client issue, we we firstly recommend you ensure you have the latest version of client and try to clear the local cache for Microsoft Teams.
- Quit Microsoft Teams.
- Cut and paste the following location into File Explorer: %appdata%\Microsoft\Teams
- Delete contents of the entire folder.
- Restart Microsoft Teams.
If I misunderstand your issues, please let me know more details about it. Thanks for your understanding!
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