Duo | Receiving multiple push notifications
Summary
You may experience multiple push notifications from Duo that may have queued up. This may happen because you were trying to connect on VPN or were on VPN. Push notifications could also queue up from not responding to the push notifications. You will notice that if you keep on clicking on "Approve" nothing happens right away. Past "Approve" notifications will generally expire, so it's possible you're approving an older approval.
Instructions
Make sure it is you trying to log in. If you blindly choose to approve the push notification, you can potentially allow a hacker access to the system. Duo verification will make you verify when using certain applications linked to our network. Outlook, Landing, 8x8 will be every 90 days since these are applications using Single Sign-On (SSO). VPN will make you use Duo every time you try to connect. This is the most likely scenario you are experiencing with the multiple push notifications.
1. To help prevent multiple push notifications, log off of VPN when not in use. If you lose connection while on VPN, the VPN application will try to reconnect, and Duo will send out a push notification. If you don't respond after a certain amount of time, Duo will lock the account. It will auto-unlock after 15 minutes.
2. Ensure your mobile device is getting a signal. WiFi is preferred since it's a little quicker than the cell towers.
3. Be ready for the push notification. You can have the Duo app open on the phone, or just wait for it to pop up on your mobile device's screen. If you use an Apple phone along with an Apple watch, you can approve through the watch.
Troubleshooting
1. If you want to help prevent multiple push notifications from queuing up. Disconnect from the VPN when you are done with it. If you don't, you could potentially received multiple push notification if you lose VPN connection.
2. If you received multiple push notifications already. Reboot your computer and start fresh.
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