The following may help with troubleshooting common issues with Duo and MFA.

General

• What phone numbers does Duo use for phone call authentications?

Apple Devices

• Troubleshooting Duo Push notification issues on iOS devices

• How do I troubleshoot Duo Push delivery issues on Apple Watch?

• The DUO prompt does not show up for me on my iPad on Fairfield Single Sign On Pages

• How do I resolve Duo Prompt display issues related to iOS or macOS content restrictions?

Android

• Troubleshooting Duo Push notification issues on Android devices

• Why can't I approve Duo Push authentications with my Android smartwatch or other wearable device?