I gave guest access to a user outside our organization to one of the teams in ms teams. The guest user organization does not has azure tenant.
The guest user use the ms team link from the invitation to teams email to login to teams by account verification code after enters his organisation email address. This is how guest user login and login successfully.
However when the guest user leave this browser session for few hours/days inactive, the session will auto reloads and the guest user cannot login to teams and has to clear the browser cache and cookie in order to login successful again. Why is it so?