Configure Microsoft Authenticator on New Phone


Did you recently receive a new cell phone? This article describes how to setup new phone for the Microsoft Authenticator app.



AACC faculty and staff with college issued devices can connect to FortiClient VPN to access on-campus only technology resources. Connecting to FortiClient requires multifactor authentication (MFA).  Additionally, all web-based sign-ins using your employee ( account require MFA.

MFA options include receiving a telephone call and approving your sign in, or receiving a number matching notification utilizing Microsoft Authenticator on your mobile device. 


If you recently purchased a new mobile device and migrated from your old device, you may not be able to approve MFA using the Microsoft Authenticator App.  MFA will need to be set up on the new device.  


Setup Authenticator on New Phone

  1. If you migrated your settings from your old phone to your new phone, you'll need to delete your account from Microsoft Authenticator on your new phone first.

    • Open the Authenticator app on your new phone. Select your account > Settings gear > Remove account

Delete MFA account from phone.

  1. Navigate to the MFA contact options ( on your computer.

  2. Sign in with your full administrative email address (ex.

  3. Approve your sign in with an option other than the Microsoft Authenticator app (ex. phone call).  If you do not have any other sign-in methods, call the Technical Service Desk and ask to have your MFA settings reset.  After confirming your identity, the Service Desk can clear your MFA settings and re-require registration.

MFA Can't use authenticator app

  1. If the Service Desk re-required registration on your account, you'll see the message below when attempting to sign in.  Select Next.

Approve sign in request prompt.

  1. If you approved your sign in with an alternate sign-in method, you'll be redirected to Security Info.  Delete your previous Microsoft Authenticator app and then select + Add sign-in method to set up Microsoft Authenticator on your new phone.

  1. Select Authenticator App from the drop down, then select Next.

Verify your identity method Text or Call

     4. Select Next 

Additional security verification, select Notify me through app and click Delete button

  1. Using your new phone, open the Microsoft Authenticator app.  If not prompted to set up a new account, select the + button in the top right corner. Select Work or school account and Scan the QR code.  Select Next.

Set up Authenticator app from Additional security verification

  1. If you don't already have the Authenticator App on your new phone, you can download it from the Apple App Store (iPhone) or Google Play Store (Android).

App Store Google Play

  1. Launch the Authenticator App on your new phone.

Authenticator App

  1. Select Add account and then select Work or school account.

Select Work or School account

  1. Select Scan QR code and scan the QR code from your computer screen.

Scan QR Code

  1. You may be prompted to approve sign in and save your settings.

If you’re still having trouble with adding your new device, go into the Authenticator App on your phone, click on your account.

Account in Authenticator App

Select the Setting icon, in the upper right.

Setting Icon in upper right

Select Remove Account.

Click Remove Account

Try adding the account again.

*NOTE: If you didn't provide alternate contact info when you initially set up MFA, you'll be unable to follow step 4 above "I can't use my Microsoft Authenticator app right now."  Please contact the Technical Service Desk or submit a request using the Remote Access Support service offering.



Article ID: 137988
Thu 2/10/22 2:38 PM
Mon 10/9/23 9:24 AM
Target audience for article content.

Related Services / Offerings

Related Services / Offerings (3)

Remote solutions connecting to the AACC network or an on-campus AACC workstation.
Report a problem with FortiClient VPN.
Request VPN access on your AACC device.