Ich kann mich nicht bei meinem Windows-Konto anmelden

I can't use my microsoft account though I am able to login via browser. It all started with losing my scores in MS Solitaire and afte I followed the advice to delete my microsoft account from my local account settings things only got worse. I can see my account details if I login via browser so email address and password are correct. But trying to login via apps games, cloud, account settings & defender is not possible at all. I don't see even see the menu where the email address has to be entered - just a blank window popping up and a message that it is not possible. I have tried vario