Help Desk

Computing & Information Services

Adding and removing devices from Duo

The video below shows a step-by-step demonstration of enrolling a replacement phone, adding an additional device, and removing a device from Duo.

How to enroll a replacement phone in Duo

Follow the steps below to activate a replacement phone in Duo. This assumes you had a different phone (with the same phone number) previously enrolled in Duo. The process is different than a regular two-step authentication; if you go on auto-pilot at the login screen you might miss an important step!
  1. Download the "Duo Mobile" app to your replacement phone from your device's App Store.
  2. On a different device (not your replacement phone), visit a website such as IRIS that requires two-step authentication... but when you get to the Duo prompt, do not click "Send Me a Push", "Call Me", or "Enter a Passcode".
    Note:  You can force a Duo prompt by using a private window in Firefox (File -> New Private Window) or an incognito window in Chrome (File -> New Incognito Window).
    Settings.png
  3. Instead of clicking any of the green buttons, click "Settings" in the top right of the Duo prompt, then select "My Settings & Devices".
    Screen-Shot-2020-04-21-at-5.31.58-PM.png
  4. At the "My Settings & Devices" prompt, select "Call Me". Your phone will ring, and a robo-human will ask you to push any number on your phone.
    Screen-Shot-2020-04-24-at-12.15.41-PM.png
  5. Now click the gear icon next to your phone number, and select "Reactivate Duo Mobile".
    newphone-reactivate.png
  6. You may be prompted to verify ownership of your phone number. If so, select either the "Call me" or "Text me" option. Depending on which you choose, the robo-human will call you and tell you a 6-digit code, or you'll receive a 6-digit code via SMS text message. Enter the code in your computer where prompted and click "Continue".
    newphone-verify.png
  7. Select the type of device you have and click "Continue".
    newphone-type.png
  8. You'll now be prompted to install Duo. Lucky you, that was done in step 1 above! Click "I Have Duo Mobile".
    newphone-install-duo.png
  9. Open the Duo app on your phone, and click the "+" in the upper right corner. Use your phone's camera to scan the barcode that is on your computer screen. Success!
    newphone-activate-success.png

How to enroll an additional device in Duo

This assumes you have another two-step device (phone, tablet, or token) already enrolled in Duo.

  1. Sign into a service like IRIS that requires two-step authentication (use a private/incognito session if doing this on a device that is remembered for 30 days).
  2. Before two-stepping, click Settings in the top right > Add a new device.Screen-Shot-2020-04-24-at-12.19.21-PM.png
  3. When prompted, authenticate using your preferred two-step method.
  4. Follow the prompts to add a new device.
  5. We recommend leaving the default When I log in option to "Ask me to choose an authentication method".

How to remove a device from Duo

 Follow the steps below to remove an existing device from Duo.

  1. Sign into a service like IRIS that requires two-step authentication (use a private/incognito session if doing this on a device that is remembered for 30 days).
  2. Before two-stepping, click Settings in the top right > My Settings & Devices.
    Settings.png
  3. When prompted, authenticate using your preferred two-step method.
  4. Click the Gear icon next to the device you want to remove > Delete Device.
    Settings_Devices.png
  5. Confirm you want to delete the device.