1. Ensure the OS of your mobile device is a Duo supported version – Android 11.0 or later and iOS 16.0 or later.
2. Check your Duo Mobile App version:

• Open Duo Mobile App
• Tap the three-line menu in the top left.

• Check the version display at the bottom of the screen.
• No action is required if your version is 4.85.0 or later.  (Example here: 4.103.0 is a later version than 4.85.0)

3.What happens if your Duo Mobile App version is below 4.85.0?

• Starting 8 Jan 2026, version below 4.85.0 will display“Update Recommended” after you complete 2-factor authentication.
• Update your Duo App through Google Play Store (Android) or App Store (iOS).

1. How can I make sure I am up to date with Duo’s latest applications in time for the Duo root certificate authority bundle replacement? https://help.duo.com/s/article/9451?language=en_US#duo-mobile
2. Which versions of Android does Duo Mobile support? https://help.duo.com/s/article/1872?language=en_US
3. Which versions of iOS does Duo Mobile support? https://help.duo.com/s/article/1871?language=en_US

·         Departmental IT Support (Staff only)