Oct 30 2020 03:38 AM
Oct 30 2020 06:32 AM
@jenswohlfeil Hello, these are the most common scenarios for the message https://docs.microsoft.com/en-us/microsoftteams/troubleshoot/teams-sign-in/someone-has-already-setup...
But it could be that a user has signed up for a self-service subscription and then you need to perform an internal takeover https://docs.microsoft.com/en-us/microsoft-365/admin/misc/become-the-admin?view=o365-worldwide