Summary
This article lists common Duo issues and provides solutions or workarounds to help you resolve problems with notifications, device setup, browser behavior, and authentication prompts.
Prerequisites
- UT NetID
- Duo Mobile installed on your smartphone, or a hardware token
- Access to your device’s notification and browser settings
Instructions
Use this table to identify your Duo issue and follow the recommended solution.
| Issue |
Solution/Workaround |
| You have not been notified that you have pending approval. |
Check Android Notification Settings
- Open Settings in Android OS.
- Select Apps and scroll down to select Duo Mobile.
- On the App Info page, tap Notifications.
- Ensure Duo Push requests / Notifications are toggled On.
Check iOS Notification Settings
- On the iPhone, open Settings.
- Scroll down and select Duo Mobile.
- Select Notifications.
- If the "Allow Notifications" option is already selected, deselect it and select it again. If it has not yet been selected, select it. Verify that all other notification options are configured how you want them.
- Fully close Duo Mobile by either swiping up on the screen or double-tapping the home button and then swiping up on the screen, depending on your device model.
- Open Duo Mobile again.
|
| Notifications to Apple Watch work erratically |
See the DUO guide about Apple Watches for troubleshooting. |
| Setup fails because your camera cannot capture the QR code. |
Allow the Duo app to access your camera during setup (it can be disabled once setup is complete). |
| Cannot select “Remember me for 7 days” because Duo automatically pushes the notification. |
Cancel the request, check the box, and push a second notification. |
| Remember Me for 7 days option is not working. |
To add an exception for Duo-served third-party cookies, update your browser settings (generally found under Privacy or Security settings) and use the following format, depending on which browser you're using:
Firefox: https://duosecurity.com
Chrome and Opera: [*.]duosecurity.com
Safari:
- Go to Safari > Preferences.
- Click the Privacy tab.
- Disable the Block all cookies option.
- Safari 13.1 and later: You must also disable the Prevent cross-site tracking option.
Note: · Safari 12 for macOS 10.12 or later does not allow setting exceptions for third-party cookies. · iOS WKWebView limits the ability to issue and read browser cookies. Apple intentionally designed this, and Remembered Devices will not work. · The Block all cookies and Prevent cross-site tracking options for iOS can be found under Settings > Safari > Privacy & Security.
Edge:
- Click More in the upper right of the toolbar.
- Click Settings.
- Scroll down and click on View Advanced Settings.
- Scroll down to Cookies and ensure it is set to Don’t block cookies.
- Restart Microsoft Edge.
|
| ‘Choose an Authentication Method’ box on the Duo login screen is cut off. |
Set your browser’s Zoom viewing setting to 100%.
Clear cache and cookies.
|
Troubleshooting
- Ensure your device has a stable internet connection for Duo push notifications.
- Restart your phone if notifications stop working unexpectedly.
- Try using a different authentication method (passcode, SMS, or token) if push fails.
Additional Notes
- Browser privacy settings can interfere with Duo’s Remembered Devices feature.
- Apple’s security restrictions may limit Duo functionality on iOS and watchOS.
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