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Update Duo Mobile

Action Required: Update Duo Mobile by March 31, 2026

Duo Official Guidance

Threat Level: Medium
Threat Type: Update Software
Advisory Date: 03/27/2026

What’s Happening?

Cisco Duo Security is replacing its certificate authority (CA) bundle used for secure communications with Duo services. Older software and mobile app versions will stop working properly after March 31, 2026. (help.duo.com)

This update affects:

  • Duo Mobile app on phones and tablets

Am I affected?

Check your version: Open the Duo app on your phone, tap the menu (three lines), and look at the bottom of the screen. If the number starts with 4.85 or higher, you are already on a compatible version of the application.

What You Need to Do:

  1. Update Duo Mobile App to keep using Duo Push and other mobile authentication methods:
    • Open the App Store (iOS) or Google Play (Android).
    • Search for Duo Mobile.
  2. Tap Update (if available) to version 4.85.0 or later
Make sure your device meets the supported OS versions:
  • iOS: 16.0 or later
  • Android: 11 or later

Devices that cannot run a supported OS or update Duo Mobile should switch to an alternate authentication method (like SMS codes or hardware/WebAuthn security keys) before March 31, 2026.

For detailed minimum versions and instructions for these components, see Duo’s official guidance: https://help.duo.com/s/article/9451

Need Help?

Please contact the IS Service Desk, if you have any questions or require assistance:
Email: Service.Desk@uregina.ca
Phone: 306-585-4685
Toll-free in Canada: 1-844-585-4685
Take cyber security awareness training available to all faculty and staff on Beauceron: https://www.uregina.ca/is/security/training/training-register.html

Duo Official Guidance