Hi, I'm John! I will help you with this.
To help narrow down the issue:
- Are you trying to sign in with a personal Microsoft account or is this a Microsoft 365 Business / work account linked to a company domain?
- If it’s a Microsoft 365 Business account, do you know if there were any recent billing issues, such as the subscription becoming past due or expired?
Click "Add comment" to let me know.
Regards,
John J.D.