I'm completely locked out of my account

If you're locked out of your Microsoft account due to an old phone number and have already tried answering the security questions, here are some steps you can take:

1. Wait for the Lockout Period: If you've attempted to recover your account multiple times, it may be temporarily locked. Typically, this lockout period lasts about 24 hours. Avoid further attempts during this time to prevent resetting the cooldown.
2. Use the Account Recovery Form: You can try to regain access by filling out the Account Recovery Form with as much accurate information as possible. This includes recent email subjects, folder names, and contacts you've emailed.
3. Contact Microsoft Support: If you continue to have issues, you should contact Microsoft Support directly. You can do this by signing in with any account or creating a new one if necessary. Provide them with the details of your situation to get assistance.
4. Try Different Recovery Methods: If you have two-step verification enabled, ensure you have access to at least one of your security methods (like your new phone number, email, or authenticator app).
5. Clear Browser Data: Sometimes, clearing your browser's cache or using a different browser can help with the recovery process.

If none of these options work, you may need to wait for Microsoft to verify your identity through the recovery form you submitted.

References:

• Can't sign in to my email - Microsoft Q&A
• I have a Micrsoft business account and I am the admin and the only user registered under this account. I can't log in because i have replaced my phone and the authenticator doesn't work. - Microsoft Q&A