06-06-2019 11:22 PM
06-06-2019 11:37 PM
06-07-2019 02:18 AM
06-07-2019 02:23 AMSolution
06-07-2019 06:11 AM - edited 06-07-2019 06:15 AM
Download Microsoft Authenticator app if you don't have it, usually this tends to fix odd login issues with Microsoft Apps.
Scratch that, you already are logged in. It appears it's one of two things. Either you are logging in with a personal Microsoft account instead of your org account. So whatever account you are logging in with doesn't have Teams setup basically. Make sure you pick work or school account when you login as well if you get prompted for both.