A Microsoft app for iOS and Android devices that enables authentication with two-factor verification, phone sign-in, and code generation
If you've lost access to the Microsoft Authenticator app after changing your phone and are unable to log in to your account, you can try the following steps:
- Use a Backup Method: If you have set up any alternative verification methods (like a phone number or email), try using those to receive a verification code.
- Reset MFA: If you are unable to access any verification methods, you may need to contact your administrator to reset your multifactor authentication (MFA) settings. They can set the requirement for re-registering MFA, allowing you to set it up again on your new device.
- Delete Sign-in Methods: If you have access to a web browser, you can try to delete the old sign-in methods directly from your security settings. Go to https://aka.ms/mysecurityinfo to view and manage your sign-in methods. However, you may need to authenticate using another method if you have set up a passwordless sign-in method.
- Re-register for MFA: After your administrator resets your MFA settings, you can register again using the Microsoft Authenticator app on your new phone.
If these steps do not resolve your issue, consider reaching out to Microsoft support for further assistance.
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