I was redirected to this page by Microsoft support to describe my problem with Microsoft Teams. I have the problem that after I have registered with Teams, a window always appears asking that I should register with Teams. If I go to it and register, the info comes: "You are already registered". I tried using the browser and the Windows app. I also uninstalled and reinstalled the app several times. Nothing works. At the beginning, Teams functioned normally, but now I can't get out of this endless loop. What is the problem and how can it be solved?