Duo Mobile app update coming Feb. 28
Today
Much older versions will no longer authenticate your logins after this date—make sure the app on your device is current.
Members of the campus community may need to update the Duo Mobile app on their device to version 4.85.0 or later by Feb. 28, 2026. This update is required by Duo due to an expiring security certificate that affects older versions of the app. If the app is not updated by this date, Duo will be unable to verify your identity and you will not be able to sign in to University of Arizona systems.
Action may be required
For most users, Duo Mobile updates automatically. However, you may need to update the app manually in the Apple App Store/Google Play if automatic updates are turned off or your device is running an older operating system.
For most users, Duo Mobile updates automatically. However, you may need to update the app manually in the Apple App Store/Google Play if automatic updates are turned off or your device is running an older operating system.
If your device has an outdated version of Duo Mobile, you may:
- See a prompt to update the app when signing in to university systems
- Receive a direct email from UITS notifying you our records indicate you are running an older version of Duo Mobile.
Check the Duo Mobile app version on your device and update it, if needed, by following the steps in the Duo – Required App Update knowledge article.
For questions about the Duo Mobile app or technical assistance, please contact the 24/7 Support Center or a Tech Zone.
What is Duo Mobile?
Duo Mobile is the application used for the university’s two-factor authentication (2FA) process. After entering your NetID and password, Duo provides a second verification step, typically a push notification to your mobile device, to confirm your identity. This additional layer of security helps protect university accounts and data.