Managing personal Outlook.com account settings, security, and privacy
Hello, thank you for reaching out to Microsoft Q&A.
If you tried to sign in and received a message that your account is locked, you can use the Microsoft Sign-In helper tool. This tool detects issues with your account and will explain the steps you need to take to resolve the problem.
Microsoft account sign-in helper
If you are still having issues, you can use the account recovery form to recover your account:-
Remember to use a familiar device from which you've frequently accessed your Microsoft account, as well as a familiar location. Microsoft will review your responses and respond within 24 hours. If you are verified, instructions on how to log back into your account will be sent to you, and if you are not verified, you will need to submit the Account Recovery form again. You can do this up to 2 times every 24 hours.