If you do not receive a push notification after enrolling your Apple, Windows, or Android phone successfully, you can try the following solutions. 


For iPhone 

Enable Notifications for the Duo Mobile App  

When you first download the app, a request appears asking you if you would like to allow Duo Mobile to send you notifications. You may have selected "Don't Allow" when this notification appeared, but you will have to allow notifications for the Duo Mobile app for it to work properly.  

To allow notifications for Duo Mobile:   

  1. Go to Settings.

  2. Scroll down and select Duo Mobile.

  3. Select Notifications. 

  4. Allow notifications by tapping on the white circle.   

NOTE: If you'd like to authenticate into your account without having to unlock your device, allow notifications and then change the notification settings to allow the notification to show on your lock screen.

Refreshing the Duo Mobile App  
If you are allowing notifications for the Duo Mobile app but are still not receiving notifications, go to the Duo app and pull down the screen. This will refresh your account and load all missing notifications. Approve the authentication request, and you are done.  

Checking Your Internet Connection 
To use the Duo Mobile app, you will need a strong Internet connection. Try turning the Wi-Fi on and off to reset a wireless network that is having issues connecting to your device. If you have cellular data, turn off your Wi-Fi and use data instead in order to get a better Internet connection.   


For Windows Phone 

This article is meant to help you troubleshoot problems with push notifications on a Windows Phone. If you do not receive a push notification after successfully enrolling your device, try the following solutions. 

Refresh the Duo Mobile App  
Open the Duo Mobile app and pull down from the top of the screen. This should refresh the app’s connection to the network and pull any waiting notifications to your device.  

 Check Your Internet Connection
If your phone still hasn’t received the push notification, check your Wi-Fi connection. Try turning it off and on again. If you’re still having issues, turn Wi-Fi off and use your cellular data instead. 


For Android

This article is meant to help you troubleshoot problems with push notifications on an Android device. If you do not receive a push notification after enrolling your device successfully, you can try the following solutions. 

 Refreshing the Duo Mobile App
Go to the Duo Mobile app and pull down the screen. This will refresh your account and load all missing notifications. Find the notification you were trying to get and approve the authentication request.  

Updating Google Play
If you are still not getting push notifications, you might need to check that Google Play is updated. If Google Play is out-of-date, update it.  

Clearing the Duo Mobile App Cache
You can also clear the Duo Mobile app cache to try and free up any trapped notifications. To clear the Duo Mobile app cache:  

  1. Go to Settings.

  2. Select Apps and scroll down to select Duo Mobile.

  3. Tap Clear Cache.   

Checking Your Internet Connection  
If none of the previous steps work, check that you are using a strong Internet connection. Try turning the Wi-Fi on and off to reset the wireless network. If you have cellular data, turn off your Wi-Fi and use data instead in order to get a better Internet connection.