Teams login Hello All, I am a parent trying to setup teams for his 5 yr old son's school, and am very frustated. This could be a long post so I apologise in advance. I bought a new laptop 2 months ago for my son and am trying to setup teams for him. Tin Contributor Apr 27, 2020 Solved Microsoft Teams Desktop on Mac Stuck in Login Loop I recently changed from one MS Office 365 email/organization to another. I've removed the old Office 365 account from everywhere I can find on my Mac, but when I launch Microsoft Teams - every time - it asks me to login with my old email address. When users log into their Teams account, their Teams account credentials are saved somewhere. Because the next time their login name is entered, teams signs in, without asking for a password. This happens even when the user logs out of Teams, before shutting down the PC. Common Area Phones - Hot Desk Login Hello, Recently deployed Teams Phone into a health care company, including Yealink MP54 handsets. As the clinical staff move around a fair bit, I have proposed configuring all the phones as CAP so they are always logged in and available. The main room has a Microsoft Teams Room Standard license, and the one that is having issues has a Microsoft Teams Rooms Basic. I wonder if they have issues with the basic license. I'm not getting much help from Yealink, my next step was opening a call with MS to see if they can look into it. I could log into teams through the PC app and in the browser but would get stuck in a login loop when doing it on my phone. My solution was to remove the account from within the android phone itself (settings/accounts & backup/Manage Accounts) and then remove the account from there. Then, to be safe, I reinstalled teams & outlook. Then it worked! Me and other admins (from reposted thread) have specific users who experience M365 authentication problems after upgrading to the latest FSLogix version (s) that offers support for New Teams. In attachments you can see how it just switches between Teams and Authenticator app. Starting teams: Switches to authenticator app: Loads in Authenticator: Back to Teams: Back to authenticator again. And then loops this. In logon logs in admin center, this user have logon alot of times in the same minute. I have tried from a different Windows account on the same machine and can login fine. Tried deleting the cache etc. Made sure the time is correct and is auto updating. Teams was signing in previously for the user, but has stopped working today. They can log to the Teams web app fine from the same windows account. For example, if you hit a link to enter Sharepoint TEAMS will tell you your email address (the one from my other TEAMS account) is not registered for Sharepoint in this account you are trying to enter. It remembers the WRONG one from the earlier login. There is a SERIOUS multi company design issue here.