Microsoft Teams Devices - Device Code Flow Sign-In Issue ? Remediation ...
...Login to the Entra ID portal (https://www.entra.microsoft.com), navigate to your conditional access policies and edit the Microsoft-managed Conditional Access policy called "Block device code flow", exclude your Teams Android device resource accounts from the policy....
https://techcommunity.microsoft.com/blog/microsoftteamssupport/microsoft-teams-devices---device-code-flow-sign-in-issue-%E2%80%93-remediation-guidance/4429547
Microsoft Teams login redirects to old organization
...The solutions presented above are in general totally useless, because it requires the user to attempt to login in to Microsoft sponsored corporate accounts which they no longer have access to because they no longer are affiliated with the organization....
https://techcommunity.microsoft.com/discussions/microsoftteams/microsoft-teams-login-redirects-to-old-organization/3301259
Unable to Log Into Teams on iPhone. Error: Sign-in Error
...The resolution was to receive a message in Teams and not view it. Eventually, the user will receive an email stating that a teammate is trying to reach you in Microsoft Teams. Within that email, there is a link to 'Reply in Teams'. If the user opens that link on their mobile device, it correctly initiates data management policy and manages Teams....
https://techcommunity.microsoft.com/discussions/microsoftteams/unable-to-log-into-teams-on-iphone-error-sign-in-error/2258909
Android phone stuck in login loop for account with previous ...
...Android phone stuck in login loop for account with previous organisation Hi. I've recently joined a new organisation and want to have Teams active on my phone as I did with a previous organisation....
https://techcommunity.microsoft.com/discussions/microsoftteams/android-phone-stuck-in-login-loop-for-account-with-previous-organisation/2753235
Teams keeps opening prompt for me to log in again, while I'm already ...
...But then after about 30 minutes or so the popup appears again. I've attached a screenshot of what it looks like when this popup appears. As you can see, my signed in teams is still visible in the background of the login prompt. Quitting Teams and restarting the program (or restarting windows) causes the same issue to occur again....
https://techcommunity.microsoft.com/discussions/microsoftteams/teams-keeps-opening-prompt-for-me-to-log-in-again-while-im-already-logged-in/2166517
Microsoft Teams Error Code 0xcaa80000
...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....
https://techcommunity.microsoft.com/discussions/microsoftteams/microsoft-teams-error-code-0xcaa80000/1565311
Clear cached credentials on a shared computer
...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....
https://techcommunity.microsoft.com/discussions/microsoftteams/clear-cached-credentials-on-a-shared-computer/1848405
FSLogix - 48v35 error at Microsoft login prompt in AVD
...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....
https://techcommunity.microsoft.com/idea/azurevirtualdesktop/fslogix---48v35-error-at-microsoft-login-prompt-in-avd/4278256
Microsoft Teams Desktop on Mac Stuck in Login Loop
...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....
https://techcommunity.microsoft.com/discussions/microsoftteams/microsoft-teams-desktop-on-mac-stuck-in-login-loop/1341170
Teams Infinite Sign In Loop | Microsoft Community Hub
...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!...
https://techcommunity.microsoft.com/discussions/microsoftteams/teams-infinite-sign-in-loop/1251739