Also using Teams on Linux, but this one happens to all clients. There's an authentication bug that causes a log in loop for anyone who signed up for a personal

Also using Teams on Linux, but this one happens to all clients. There's an authentication bug that causes a log in loop for anyone who signed up for a personal account using an email address that they also used as part of another MSN/live.com service (eg- as a secondary address), especially if your original Teams/O365 account was converted to a domain/business account. If you log into live.com with your Teams email, add a different fallback email and remove your current one, that may help.