Audience: Purdue faculty, staff, and students
Purpose: Help users understand the 2026 Duo minimum support versions
What's Changing?
Beginning April 16, 2026, Duo will no longer support IOS 16 and Android 11. The new minimum supported versions will be IOS 17 and Android 12.
This end-of-support milestone means that:
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Duo Push will continue to work on already-installed versions of Duo Mobile on iOS 16 and Android 11, and users will continue to be able to authenticate, however Duo Verified Push will no longer operate.
Am I Affected?
If you are using IOS 16 or Android 11 you will not be able to install or update the lates version of Duo Mobile and will not receive verified push notifications. Version 4.85.0 or higher and IOS 17 or Android 12 is required for Duo Verified Push on April 16th 2026.
Checking the IOS Version on your iPhone, iPad, or iPad touch
https://support.apple.com/en-eg/109065
Checking the Android Version on your Android device
https://support.google.com/android/answer/7680439?hl=en
Checking your Duo Mobile Version
https://service.purdue.edu/TDClient/32/Purdue/KB/ArticleDet?ID=2152
What Should I Do?
Please update the device OS to IOS 17 or Android 12 as soon as possible to avoid disruption. Your Duo Mobile application version must be 4.85.x or higher. For iOS, find the latest version of Duo Mobile in the App Store. For Android, find the latest version of Duo Mobile in Google Play. Be sure to install the app published by Duo Security LLC.
If you are unable to update to a supported version of OS or the latest version of Duo Mobile, you can continue accessing your account by using a Duo Mobile passcode. A Duo Mobile passcode can be found in the Duo Mobile app. To use a passcode:
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In the Duo prompt, tap “Other options” and select Duo Mobile passcode.
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Open the Duo Mobile application on your device.
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Tap on your Purdue University account listed in the app to view a 6-digit passcode code.
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Enter the 6-digit code during login to complete verification.
Alternatively, you can set up additional methods. Purdue IT recommends setting up at least two authentication methods.
Still Not Receiving Push Notifications?
Check App Notifications:
Ensure that notifications are enabled for Duo Mobile. On iOS, go to Settings > Duo Mobile > Notifications and make sure "Allow Notifications" is turned on. On Android, go to Settings > Apps > Duo Mobile > Notifications and ensure notifications are enabled.
Network Connection:
Verify that your device is connected to a reliable Wi-Fi or cellular network. A weak connection can prevent notifications from being received. If you're having issues, try toggling Wi-Fi off and on or switching to cellular data. Confirm airplane mode is not on.
Pull to Refresh:
If you expect a notification but haven't received it, try pulling down on the screen in the Duo Mobile app to manually check for notifications. This action forces the app to reach out to the Duo cloud service directly.
Do Not Disturb Mode:
Check if your device is in Do Not Disturb mode, which can suppress notifications. Disable this mode if it's active.
Reboot Your Device:
Restarting your phone can resolve background issues that may be preventing notifications from appearing.
Update Google Play Services (for Android users):
Ensure that Google Play Services is up to date, as outdated services can affect notification delivery.
Reinstall Duo Mobile:
If the problem persists, consider uninstalling and reinstalling the Duo Mobile app. This can help reset any settings that may be causing issues.
Check Background Data Settings (for Android users):
On Android, ensure that background data is enabled for Duo Mobile. Go to Settings > Apps > Duo Mobile > Data usage and check the settings.
Questions can be directed to it@purdue.edu. Additional information on using Duo authentication with Purdue Login is available in the Purdue Knowledge Base: https://service.purdue.edu/TDClient/32/Purdue/KB/ArticleDet?ID=454
Still need help? Click the 'Purdue IT Request' button to start a ticket.