If you are using Android be warned that the combination of Microsoft Teams and Microsoft Authenticator on the same phone is a “no go”:
Redirecting
@Peter_H Can you please elaborate a bit on why you say Microsoft Teams and Microsoft Authenticator on the same phone is a “no go”? I read through the thread that you linked to and, while there are some posts from users who say uninstalling Microsoft Authenticator fixed their problem signing into Teams, there are several posts from users who say that they don’t have Microsoft Authenticator and/or uninstalling it didn’t change anything for them. I have both Microsoft Authenticator and Microsoft Teams on my phone and it works without a problem. That is, of course, anectdotal data, but so are the posts about uninstalling Microsoft Authenticator, as well as the posts about not having it installed at all and having the same/similar problems with Teams.