How to update your Authentication Methods

If your Microsoft Authenticator isn't working, or if you want to add it or a different phone number to your authentication methods, you can do so by doing the following steps:

1. Go to Outlook.com and sign in.
2. Click on your profile. This will be your profile picture or your initials on the top right corner. 
3. Click on My Account
4. On the menu on the left side, expand My Account
5. Click Security Info. It might ask you to enter your password or do the authentication method again.
6. You can delete authentication methods here, and Add Sign-in methods on this page. The most consistent working method to select is Microsoft Authenticator for your app and Alternate Phone for a second phone.