What is this service?
The 91Ƶ provides Duo Multi-Factor Authentication (MFA) security to help students, faculty, and staff protect themselves—and the University—against cybercrime.
What are the features of this service?
Duo Multi-Factor Authentication enhances security by adding a second layer of authentication to your login. Duo is stronger than a password alone because it uses two factors to confirm your identity: something you have (such as your phone or device) and something you know (your password).
Who is eligible for this service?
Duo MFA is required for all employees, students, special community members, and DU users who access Office 365 email and applications, VPN, or any other services protected by Duo MFA.
What do I need to do to get this service?
When you log in to your account for the first time using a newly created DU email and an activation link from DU IT, you’ll be prompted to set up Duo MFA. Follow the on-screen instructions to complete the setup.
When prompted, download the Duo Mobile app from the iOS App Store or Google Play Store. It’s the easiest and fastest sign-in method available.
Need help setting up Duo for the first time? Please reference our knowledge base:
I have a new phone, or my Duo app is “disabled”
On your computer, open a web browser and go to the website my.du.edu and log in with your DU email and password.
When the Duo menu appears, click Other options at the bottom of the window, then select Manage Devices.
Click Call Me to approve your login and proceed to the Manage Devices menu. Then click I have a new phone and follow the on-screen steps to set up your new device.
Need help setting up Duo on a new phone? Please reference our detailed guide:
What type of support is available for this service?
Please check out the training materials below.
Still questions? Please visit