We are currently migrating from Skype for Business O-Premises to Online and then to Teams. We have moved all current/active users to Skype for Business Online and will soon move to Teams Only but one thing that is confusing me...when i log in to the Teams Admin Center I can find one user that isn't suppose to show up there. It says that the user is still On-Premises, which is correct as it has not migrated and will not be, but, what is confusing me is that this user even shows up as a user under Users as this user has no license what so ever and log-in is blocked for the user.
Can someone please explain to how this is possible and how to remove the user? Thanx!