Enroll a Device or Phone Number in Duo


Duo Two-Factor Authentication


Instructions for enrolling your device (smartphone or tablet) or a phone number in Duo so you can use it for two-factor authentication (2FA) at U-M.


The steps below detail how to enroll in Duo two-factor at U-M for the first time.

Note If you have already started using Duo two-factor at U-M and want to add a device, refer to the steps in Manage Your Duo Devices.

For best results, complete these steps on a desktop or laptop computer.

  1. Go to Duo Device Management and log in.
  2. Click Setup Duo.
  3. Click Next on the Welcome to Duo Security screen.
  4. Click Next on the Did you know? screen.
  5. Click Next on the What can you do? screen.
  6. Select the applicable option (Duo Mobile app, security key, or phone number).
  7. Depending on the option you select:
    1. To enroll a phone number or the Duo Mobile app on a smartphone, enter the phone number and continue with the following steps.
    2. To enroll the Duo Mobile app on a tablet, click I have a tablet and skip to step 13.
    3. To enroll a security key, complete the onscreen prompts and skip to step 14.
  8. Click Continue.
  9. Click Yes, it’s correct if the correct phone number appears.
  10. Click Send me a passcode or Or call my phone.
  11. Verify the phone call or enter the passcode that was sent to your phone.
  12. Click Verify.
  13. If you are adding Duo Mobile, open the app on your device and scan the QR code.
  14. Click Continue.
  15. If you have another device or phone number to add as a backup option, select it now, or click Skip for now.
  16. Click Log in with Duo.


  • An iPhone and want to use the Duo Mobile app on an Apple Watchuse the companion Watch app on the iPhone to show the Duo Mobile app on your Apple Watch.
  • An Android smartphone, you can receive and approve Duo push notifications on a paired smartwatch if you ensure that notifications are enabled on the phone. To approve authentications, your phone must be unlocked. If your phone is normally locked, you can enable Smart Lock in order to approve notification actions.

Additional Information

Duo Two-Factor Authentication is a security measure that requires users to provide two forms of authentication to access their accounts. This provides an extra layer of security beyond the traditional username and password, making it more difficult for unauthorized users to gain access to sensitive information. We recommend having at least two Duo options to help ensure your access in case of unexpected circumstances like lost internet, lost device, etc. 

If you have a replacement device and cannot authenticate with Duo using the previous device to access the Duo enrollment page, please contact the ITS Service Center for assistance. We will be able to help you add your replacement device.

Need additional information or assistance? Contact the ITS Service Center.

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Article ID: 118
Mon 4/20/20 8:02 AM
Fri 3/15/24 8:25 AM

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This document provides instructions for enrolling your landline telephone, non-smart cell phone, or softphone in Duo so you can use it for two-factor authentication (2FA) at U-M.
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