Frequently Asked Question

Support Guide: How to Remove and Re-add Microsoft Authenticator MFA on iOS and Android

If your account has changed (e.g., domain migration to @fmu.edu), your Microsoft Authenticator app may no longer work with the old email address. This guide will help you remove and reconfigure MFA (Multi-Factor Authentication) using Microsoft Authenticator on your mobile device.

Before You Begin

• Have your updated FMU email address (e.g., username@fmu.edu) and password ready.
• Access to another device or browser may be required to complete sign-in.

Step 1: Remove Old Account from Microsoft Authenticator

iOS & Android:

1. Open the Microsoft Authenticator app.



2. Tap the three-dot menu (...) or press and hold the account you want to remove
3. Click on the gear or settings icon                                                                            
   
4. Select Remove account or Delete account.                           
5. Confirm the removal.                                      
   

Tip: If you're unsure which account to remove, verify that it ends in @fmu.fmuniv.edu

Step 2: Re-add Your FMU Account

1. Open Microsoft Authenticator.                                                        
   
2. Tap the + (Add account) icon.                                                        
   
3. Select Work or school account.                                                                             
   
4. Choose Sign in and enter your new FMU credentials (e.g., username@fmu.edu).          
5. Complete the login and any additional prompts (such as phone/email verification).
6. Make sure to type your first.lastname@fmu.edu and Click Next                           
   
7. Enter your current password and Click Sign in                        
   
8. Click on the text to get a text message to verify                                              
   
9. Type the verification code and Click Verify                             
   
   
10. On this notification screen Click Continue                           
11. This is an optional notification Click the Skip button                     
12. Click Yes, skip Click                                                        
    
13. This is just a notification screen Click Done                                
14. The new account should be shown properly.                                      

The app will now generate time-based one-time codes (TOTP) or receive push approvals.

Optional: Set Microsoft Authenticator as Default MFA Method

1. Go to https://mysignins.microsoft.com/security-info.
2. Sign in with your updated FMU account.
3. Under Default sign-in method, select Microsoft Authenticator - notification.

Still Having Trouble?

If the Microsoft Authenticator app won’t accept your login or shows an error:

• Use an alternate browser (In-Private) to complete sign-in during setup.

FMU IT Support

• Email: cyberzone@fmuniv.edu