You may have trouble receiving push requests if there are network issues between your phone and the Duo service. Many phones have trouble determining whether to use the Wi-Fi or cellular data channel when checking for push requests, and simply turning the phone to airplane mode and back to normal operating mode again often resolves these sort of issues, if there is a reliable internet connection available. Similarly, the issue may be resolved by turning off the Wi-Fi connection on your device and using the cellular data connection. Also, try opening the Duo application to verify if there is a push request waiting to be accepted.
Check the time and date on your phone and make sure they are correct. If the date and time on your phone are manually set, try changing your device's configuration to sync date and time automatically with the network.
Should neither of these actions help, see the Duo Knowledge Base for additional iOS and Android troubleshooting steps.
If you can't get Duo Push working on your own, you can log in with a passcode generated by the Duo Mobile app and send a new activation link to your phone. See the My Settings & Devices guide for instructions. More information on authenticating can be found in this short video.
More solutions to common issues can be found here.
If you've tried the suggestions here but can't get Duo Push working or reactivate your device yourself, please contact the Information Technology Service Center at (716) 673-3407 or firstname.lastname@example.org
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