Hello gerald mcshane,
Welcome to Microsoft Q&A forum.
May I know have you tried the suggestions from the AI assistant yet? If you did, may I know how it goes?
Before we proceed further, may I know if you are able to log in to the Microsoft website with your account? Please try it with incognito/inPrivate mode as well. Also, if there are any other apps that require a Microsoft account have the same issue?
I'm waiting for your reply.