Registration truly takes about one minute, please do this at your earliest opportunity!
•Click the Register button at bottom right of the notification
•You’ll be taken to a dialog titled "Platform Single Sign-on Registration”. Click Continue
•You’ll see a macOS login request, TouchID to authenticate or enter your password:
•After you unlock above, you’ll receive an authentication request from Microsoft, with 2FA required
•You’ll then get this instructional window. Click Open System Settings
•Final step!
All done, thank you! You may close the windows this opened and go back to your day.