Microsoft Authentication App

Question

How do I disable the authenticator app on my account? I lost my iphone and the new authenticator app is not working when I attempt to log on to my account.

Answer 1

To disable the Microsoft Authenticator app on your account, you will need to delete the sign-in methods associated with your account. Since you lost your iPhone and cannot access the authenticator app, you may need to follow these steps:

1. Access Security Settings: Go to your security settings in a web browser by visiting https://aka.ms/mysecurityinfo.
2. Delete Sign-in Methods: From the list of sign-in methods, delete the authenticator app method associated with your account. If you have other methods set up (like SMS or phone call), you can use those to verify your identity.
3. Re-register MFA: If you are unable to delete the authenticator app method, you may need to have an administrator set the requirement for re-registering multifactor authentication (MFA) for your account.

If you are not an administrator, contact your IT support for assistance in disabling the authenticator app and setting up a new method for MFA.

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References:

• Can't set up MFA because five devices are already registered to use an authenticator app
• Microsoft Authenticator issues