verification failed unknown error
I can sign on the icloud.com and appleid.apple.com from my Macbook, with my longtime Apple ID,
My problem is I cannot successfully sign into System Preferences/Apple ID from my Macbook Pro. I get the error message "verification failed unknown error" My Messages, Notes, Contacts, and Mail apps are all blank.
My Macbook System Preferences/ Internet Accounts page is blank (and the + sign for adding an account is greyed out.) I can't sign into the App store or Facetime from my Macbook.
My Iphone (find my Mac) shows my Macbook is signed into my account. Appleid.apple.com/devices also shows I am signed in on my Macbook...but my Macbook doesn't seem to know that.
MacBook Pro 13″, macOS 11.2