How to Enroll in Duo


If you have not previously enrolled in Duo, you should be automatically prompted to register when you try to access a Duo-protected application such as the Office 365 portal or Box. This article assists first time users in the Duo enrollment process. 


  • In your web browser, open a webpage or resource protected by Duo such as the Office 365 portal or Box.
  • After you have opened a protected webpage, you will see the Duo prompt page.
  • Select an option you would like to use as your 2-factor device and choose Continue.

Note: It is recommended to use Duo Mobile on your mobile phone. This would allow you to authenticate using multiple methods such as push notifications, SMS, and Phone Call as per your convenience.

  • If you selected Duo Mobile option, you must enter the mobile phone number of the device you would like to associate with Duo Mobile and follow the Duo Application instructions.
  • If you selected a Security Key option, you need to have a designated device to save the passkey and follow the Duo instructions.
  • If you selected Phone Number option, you must enter your phone number and follow the Duo Application instructions.

  • Once you have successfully set up a device with your account, you can choose to add a Security Key to your account or select Skip for now to continue.

  • Once done, select Log in with Duo to log in.

My Settings & Devices screen in Duo.

  • Duo will ask you to confirm if this is your device. 
    • If you are using a trusted device choose Yes, this is my device
    • If you are signing in on a public or shared computer, select No, other people use this device.

Note: If you choose No, other people use this device, you will need to use Duo to authenticate when your trusted browser session expires.
  • After you have successfully authenticated with Duo Mobile, a green check mark will appear indicating your enrollment was successful.

Duo screen showing authentication methods available, including Duo Push, Call Me, and Passcode.

  • You are now all set! All your future Duo-protected log-ins will appear in this format for ease of use and continuity.
Note: It is recommended to have two devices on Duo, in case your primary method is unavailable.

For example, enrolling your cell phone as your primary and your office phone as another option. Refer to this article for steps to add a new device to Duo.

If you still encounter issues enrolling in Duo, contact the OIT Service Desk via (972-883-2911) or live chat.

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Article ID: 344
Mon 11/22/21 12:51 PM
Wed 4/10/24 4:56 PM

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Duo is the university two-factor authentication method designed to add a second layer of security to your NetID account. Verifying your identity using a second factor, such as your phone or a security key, prevents anyone but you from logging in, even if they know your password.