There are several possible reasons why signing in with the Microsoft Authenticator app fails:

1. You deleted your account in the authenticator app.
   • Add your UGent account back in the app.
2. You have a new phone.
   • Download and install the app on your new phone.
3. You did not respond to the notification of the authenticator app on your smartphone in time.
   • Click on "Send a new request to my Microsoft Authenticator app".
     
4. The app does not give push notifications on your smartphone (yet).
   • Make sure push notifications are enabled for the Microsoft Authenticator app on your device.
   • Swipe down in the list view of the app to check for pending verifications. You can sign in using pending verification as a temporary solution.
   • Check that the device's date & time are correct if you get an expired notification.
5. You have not (yet) given the app permission to the camera to scan the QR code.
   • Access your phone's camera through the app's settings.

If the solutions above do not work, please try a different MFA method.

Remarks

• Please make sure that the Microsoft Authenticator app is allowed to send push notifications (on an iPhone, go to Settings > Notifications > Microsoft Authenticator app and enable “Allow Notifications”).
• This method will no longer work if you delete the Microsoft Authenticator app.
• This method will no longer work after you have reset your smartphone to its factory settings.
• This method will not work automatically on a new smartphone after you have transferred your apps and data to it.

Adding as authentication method

1. Go to https://mysignins.microsoft.com/security-info

2. Log in with your UGent account.

3. Select "+ Add sign-in method".

4. Select "Microsoft Authenticator".
5. Select "Download now" and install the mobile app on your smartphone.
   
6. Click “Next” on the computer screen when the installation is successful. A QR code will now appear on the screen.
   
7. Open the Microsoft Authenticator app on the smartphone and choose “Scan a QR code.” If you can't use your camera to scan a QR Code, click Can't scan the image on your PC and tap Enter code manually on your mobile.
8. Scan the on-screen QR code from the Microsoft Authenticator app on your smartphone to add your UGent account to this Microsoft Authenticator app.
9. Select "Next" on the computer screen.
10. Select "Approve" on the smartphone after you receive a test code in the app.
11. Select "Done" on the computer screen.