Change number on Authenticator app

Question

How do I change my phone number that gets codes on the Authenticator app?

Answer 1

Hi Tyler Milliken,

Log on to the account (MSA) that is using the Authenticator app, hope you still have the old phone, go to https://account.microsoft.com/security once there add your new number.

let us know are you using Business 365 which is a different process

Answer 2

To change the phone number associated with your Microsoft Authenticator app, you can follow these steps:

1. Sign in to the Microsoft Entra admin center as an Authentication Administrator.
2. Navigate to Entra ID > Users.
3. Select the user for whom you wish to change the authentication method and click on Authentication methods.
4. At the top of the window, select + Add authentication method.
5. Choose Phone number as the method and enter the new phone number in the valid format (e.g., +1 4255551234).
6. Click Add to save the changes.

Alternatively, users can also manage their own authentication methods by going to My Sign Ins | Security info and selecting the option to change their phone number.

Make sure to follow the necessary security protocols when updating your authentication methods to ensure your account remains secure.