Managing personal Outlook.com account settings, security, and privacy
Hello,
May I know if you have any other verification methods, such as a recovery email address or an Authenticator app, to verify your identity?
If so, you can sign in to the security settings page for your Microsoft account here to update the information.
Note -
Microsoft always recommends that account users have at least three security verification methods active. So, even if one method gets disabled or isn't working, you can use a different method to verify the identity.
If you are unable to sign in and make this security info change,
- See whether your Phone isn't blocking texts from Unknown numbers.
- Then, use a different Wi-Fi network, such as a mobile hotspot , and open a Private browsing/incognito tab in your web browser, then try requesting the verification code.
If you are still having trouble receiving the code, try running the "Microsoft Verification Code Troubleshooter" from the link here-