Migrating from Outlook Mobile to Microsoft Authenticator for MFA

Issue/Question

I'm having issues authenticating using Outlook Mobile app, how do I enroll with Microsoft Authenticator app instead?

Cause

The Microsoft Authenticator app is the supported method of validating multi-factor authentication.

Resolution

The following steps must be completed with your smart phone plus another device like a laptop, desktop, or tablet.
  1. Download Microsoft Authenticator app from device's App Store.
  2. Log in via My Sign-Ins on a device other than your smart phone.
  3. Click Security Info.
  4. Click Add sign-in method.
  5. Select Microsoft Authenticator.
    Note: Do not select Passkey in Microsoft Authenticator.
  6. You will be prompted to set up Microsoft Authenticator app, click Next.
  7. Click Next. You will be shown a QR Code.
  8. In Microsoft Authenticator on your smart phone, tap Scan a QR Code.
    Note: If you are not presented with the option to Scan a QR Code, tap the icon in the top right, select Work or school account, and then Scan a QR Code.
  9. If prompted, Allow Authenticator to take pictures and record video.
  10. Use your device to scan the QR code from My Sign-Ins. You will receive an Account Added Successfully message within the app.
    Note: This QR code must be scanned from within the Microsoft Authenticator app, not the default Camera app.
  11. Within My Sign-Ins on your second device, click Next.
  12. You will be presented with a two-digit numerical code that you will need to enter within the Microsoft Authenticator app.
  13. You will receive an 'Approve sign in?' notification on your smart phone.
  14. Enter this code into the prompt within the app on your device and click Yes.
    Note: You may also be prompted to pass your phone's biometrics. (PIN, FaceID, fingerprint, etc.)
  15. Within My Sign-Ins, click Next and then Done.
  16. On My Sign-Ins, click Delete for Microsoft Authenticator (in outlookMobile).
    Note: Ensure that you Delete entry with (in outlookMobile) in title.
  17. Your account is now configured to use Microsoft Authenticator app instead of Outlook Mobile app for authentication.
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Instructions for using the Microsoft Authenticator app as multi-factor authentication method on multiple platforms.