FAQ (Duo Two-Factor Authentication)

What is Georgetown Duo?

Duo is a tool that provides an extra level of security that protects your Georgetown password against hackers. Duo uses a process called “two-factor authentication” to require an additional step at login that ensures your password is protected against theft. 

What are the benefits of using Georgetown Duo?

Georgetown Duo provides secure access to Georgetown computing services such as Georgetown Google Apps, Box, GMS, and Canvas, protecting your password against potential attacks. 

Who is eligible to enroll in Georgetown Duo?

All current Georgetown students, faculty, and staff on the Main Campus, Medical Center, Law Center, and the McDonough School of Business are eligible to enroll in the Duo security service

I don’t want to use my personal phone/mobile device for Georgetown business – what other options do I have?

Please note that the Duo application can be installed for free and uses very little data. If you still do not wish to use your personal device for Duo access, you may:

  • Have Duo call a landline phone so that you can authorize using the keypad.
  • Request a bypass code from the UIS Service Center by going to help.georgetown.edu.
  • Enter the last nine digits of the CARD number on the back of your GOCard as a bypass code.

I have my mobile device with me but no access to the internet or phone calls – what can I do?

  • The Duo application generates a dynamic bypass code every minute that can be entered and does not require an internet connection.
  • Enter the last nine digits of the CARD number on the back of your GOCard as a bypass code.

I lost my mobile device or left it at home, and I do not have access to a landline phone – what can I do?

You may enter the last nine digits of the CARD number on the back of your GOCard as a bypass code.

I’m a Sponsored University Associate (SUA); can I enroll in Georgetown Duo?

As of Dec 2018, all SUAs are required to enroll in Duo.

How does the Georgetown Duo security service work?

You first enroll in Georgetown Duo then install the Duo app on your mobile device, and then set up your mobile device to work with Georgetown Duo. Once you’re set up, you’ll log in to any Georgetown computing service as before, but after you enter your NetID and password, Duo pushes an authentication notice to your device. Once you verify the notification, you’ll be able to access your account. You’ll need to make sure you have your mobile device with you whenever and wherever you log in. 

How will logging in to GU Web sites differ using the Georgetown Duo security service?

After you log in to a Georgetown computing service (e.g., Google Apps, Box, GMS, Canvas), Duo will ask you to choose an additional authentication method (send a notification to your device, call you, or require you to enter a passcode) that will require you to take an action on the mobile device you enrolled in Georgetown Duo. Once you do this, you’ll be logged in.

Am I required to sign up for Georgetown Duo? 

All faculty and staff are required to sign up for Duo.

Do I have to sign up for Georgetown Duo within a certain time frame?

Yes. You should sign up for Georgetown Duo by December 22, 2018. If you don’t sign up by this date, you will be blocked from accessing critical Georgetown systems, such as Gmail, Box, Banner, and GMS.

How do I sign up for Georgetown Duo?

To sign up, you first need to enroll in Georgetown Duo by going to the Georgetown Duo Web page. After you sign up for Duo, you’ll need to install and set up the Duo Mobile app on your mobile device

What versions of iOS and Android does Duo Mobile support?

For details on supported operating systems for Duo Mobile, please refer either to “Which versions of Android does Duo Mobile support?” or “Which versions of iOS does Duo Mobile support?”.


  • iOS 9 and Android 5 (“Lollipop”) will no longer be supported. However, if you already downloaded and installed the Duo Mobile app on your mobile device, you will still be able to authenticate.
  • UIS recommends upgrading to the most recent version of iOS or Android for your device to get the latest security patches, features, and improvements.

The device I enrolled in Georgetown Duo was lost/stolen. What do I do? 

Contact the Service Center immediately to report that your device was lost/stolen. 

Note:  With Duo’s two-factor authentication, your Georgetown password should continue to be protected from hackers, so no one should be able to access any GU Web sites you regularly log in to. However, any data on your device (documents, contacts, email addresses) might be accessible; therefore, the data on your device might not be retrievable.

How do I add another device to my Duo account?

Click here for instructions on how to add another device to your Duo account

I just got a new replacement phone, how do I set up this phone in Duo?

If you obtained a new device, such as the latest model iPhone, that replaces another device you owned and that you previously registered in your Duo account, and if the replacement device has the same phone number as the older device, then you’ll need to reactivate the new device.

Can I use Georgetown Duo if I’m out of the country?

Yes. You can use Georgetown Duo from anywhere, as long as you can connect to the Internet. If you are in a location where you don’t have Internet access, you can generate a passcode using the Duo Mobile app on your mobile device.

How can I use Georgetown Duo if I don’t have cellular or Internet service?

You can generate a passcode using the Duo Mobile app.

I get a “No Internet Connection” error message on my device when I try to log in using Duo.

This message means that your device is not currently connected to the Internet; your device needs to be connected to the Internet to receive notifications. Click here for instructions on how to correct this and log in to your application.

What can I do if I don’t have my device with me to log in to my application?

If you don’t have your device, and you previously added/registered another device to your Georgetown Duo account, you can log in using that other device.

Note:  If you’ve registered only the single device, contact the Service Center (202-687-4949; 855-4949; help@georgetown.edu) for assistance.

How can I use Duo if I don’t have my device with me and I’m traveling?

If you don’t have your device and you’re away, you can log in to Duo by entering a passcode.

  1. Open the login page of the application (e.g., Gmail, GMS) you want to log in to.
  2. Enter your NetID and password when prompted.
  3. On the Duo authentication screen, click Enter a Passcode.  (Note:  If you have Duo set up to perform Send Me a Push automatically, just click Dismiss, and then click Enter a Passcode.)
    Click on 'Enter a Passcode'
  4. On the Duo authentication screen, enter the last 9 digits of the number on the back of your GOCard. You can locate the number as shown in the example below.
    GOCard Card number on the back of the GOCard

    Note If this number isn’t printed on your GOCard, contact the Service Center at 855-687-4949 or help@georgetown.edu to get a passcode.

  5. Click Log In. Duo will log you in to your application.

When I try to log in to my application, I don’t receive any push notification on my device.

If you’re not receiving push notifications, you might not have notifications turned on for the Duo Mobile app on your device.

To turn on Duo notifications for your device, perform the following:

Apple (iOS)

  1. Tap Settings.
  2. In the “Settings” screen, tap Notifications.
  3. Tap on the Duo Mobile listing.
  4. In the “Duo Mobile” screen, move the slider next to Allow Notifications to turn on notifications.


  1. Tap Settings.
  2. In the “Settings” screen, tap on Applications.
  3. In the “Applications” screen, tap on Application Manager
  4. In the “Application Manager” screen, locate the Duo Mobile app listing, and then tap on that listing.
  5. In the “Duo Mobile” screen, tap on Notifications.
  6. In the “Application notifications” screen, move the sliders next to Allow notifications and Previews in pop-ups to turn on notifications.