Authenticator app

If you have lost access to your 2FA codes in the Microsoft Authenticator app and restoring from backup did not work, you may need to consider the following steps:

1. Contact Support: Reach out to Microsoft Support for assistance. They can help you reset your multi-factor authentication (MFA) settings. You may need to provide verification of your identity.
2. Use Backup Codes: If you have previously saved backup codes for the accounts that require 2FA, you can use those to regain access.
3. Alternative Recovery Options: If your account has alternative recovery options set up (like a phone number or email), you can use those to authenticate your identity.
4. Data Protection Team: If you are the only admin for your account, you may need to contact the Microsoft Data Protection team directly to assist with resetting your MFA settings. This often involves verifying your identity through a support call.
5. Re-register MFA: If you regain access to your account, consider re-registering your MFA methods to ensure you have a working setup moving forward.

It's important to act quickly to regain access, especially if you rely on these accounts for critical services.

References:

• How Do I Regain Access to My Account After Losing Access to Microsoft Authenticator? (Urgent Request). - Microsoft Q&A
• I need to reset my mfa methods - Microsoft Q&A