Changing between multiple Teams accounts within the app or browser
deleting the cache here: %LocalAppData%\Packages\MSTeams_8wekyb3d8bbwe
And also deleting the data in this folder: %LocalAppData%\Packages\Microsoft.AAD.BrokerPlugin_cw5n1h2txyewy
I have found a possible solution:
Delete:
%LocalAppData%\Packages\MSTeams_8wekyb3d8bbwe
%LocalAppData%\Packages\Microsoft.AAD.BrokerPlugin_cw5n1h2txyewy
%LocalAppData%\Microsoft\OneAuth
%LocalAppData%\Microsoft\TokenBroker
%LocalAppData%\Microsoft\IdentityCacheThen restart the PC.
This will sign out all Microsoft products but does remove the users from the login list and removed their login details, meaning a password is required to login to Teams.
Thank you! I was Finally able to get rid of that old outlook.com account that was causing problems in Teams.