Error logging into Microsoft Teams

Narsipur S Amarnath 0 Reputation points


I have an individual Microsoft Teams subscription - I just downgraded from a Family subscription. I can no longer log into Microsoft Teams. I get an error message that says

"Selected user account does not exist in tenant 'Microsoft Services' and cannot access the application '1fec8e78-bce4-4aaf-ab1b-5451cc387264' in that tenant. The account needs to be added as an external user in the tenant first. Please use a different account."

Seems to be some kind of error from Microsoft AD or the AD Service on Azure. Can someone fix this so I can go back to using my Teams?


Microsoft Teams
Microsoft Teams
A Microsoft customizable chat-based workspace.
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  1. SokiGuo-MSFT 22,996 Reputation points Microsoft Vendor

    Hi @Narsipur S Amarnath

    What is your account type? Personal account or work account.

    Does the Teams web client have the same problem?

    It seems that the error message is an Azure AD login error. It recommends you delete your Teams client cache as the following steps:

    1.Fully exit the Microsoft Teams desktop client. To do this, either right click Teams from the Icon Tray and select ‘Quit’. Or run Task Manager and fully kill the process.

    2.Go to File Explorer, and type in %appdata%\Microsoft\teams.

    3.Once in the directory, delete any file in the following folders:
    %appdata%\Microsoft\teams\application cache\cache
    %appdata%\Microsoft\teams\Local Storage

    If it is no luck after that, you could uninstall and reinstall the Microsoft Teams client and have a try.

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