Multi-Factor Authentication (MFA) with Duo (2024)

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Category:IT SecurityRemote AccessSoftwareAudience:FacultyResearchersStaffStudents

Staff, faculty, and students are required to enroll a device in Duo Security for multi-factor authentication to help strengthen security by providing two proofs of your identity.

Start Using Duo

Welcome to Duo

Duo must be used with

  • GlobalProtect, the university's virtual private network (VPN)
  • VMWare Horizon, access to university resources through a remote desktop (often referred to as VDI)
  • Microsoft 365 applications including Outlook for university email whether you are off-campus or on-campus
  • Employee and student portals at my.cu.edu

Install and Register for Duo

  • Download the Duo app on your preferred mobile device. OIT highly recommends doing this on your smartphone.
  • Register for Duo from your laptop or desktop computer.
    • In your browser, type in: https://passport.ucdenver.edu/cusecure.php and click enter.
    • Remove your university email address and type in your user name.
    • Be sure to log in using your university username (not your email address) and your password.
    • The Duo Authentication “Start setup” message will appear. (If you're already registered for Duo, you'll receive a ready to start using CU Secure message.)
    • Troubleshooting: If you have an issue accessing the https://passport.ucdenver.edu/CUSecure.php link, clear your browser data, then close your browser and reopen a new session. You must enter your user name (generally your last name and first initial or a combination of your last and first name).


Check for Supported Devices and Operating Systems

Be sure you are using the most up-to-date browser and updated operating systems on all your devices. Refer to the table below for assistance. Contact the Service Desk with any questions you may have about compatibility.

Microsoft 365 and Duo Security Supported Clients and Browsers

Operating Systems (OS):

DeviceRequirementsDuo Notes
Outlook for iOSiOS 14 or higher
Outlook for AndroidAndroid 7.2 or higher
Microsoft Outlook 2019MS Outlook 2019 is supported
IMAP and POP3Microsoft Outlook will not support connection to emails through the IMAP client or POP account.
Microsoft 365 Latest browser versions of Safari, Chrome, Edge, or Firefox
Microsoft system specs include:
  • Memory- 4GB RAM
  • Disk Space - 4GB
  • Monitor Resolution - 1280x768
  • Windows 10
32-bit requires hardware acceleration for 4K and higher
Mac system specs include:
  • Memory - 4GB RAM
  • Disk Space - 10GB
  • Monitor Resolution - 1280x800

Apple/Mac:

  • Ventura
  • Monterey 12
  • Big Sur 11

HFS+ hard disk format (also known as macOS Extended) or APFS

Updates may require additional storage over time.

LinuxInstall the most recent browser for Linux. If you have questions, the OIT Service Desk will try to help as they are able but, the team does not have access to the Linux OS to troubleshoot.
Keep your browser open or you will be required to authenticate at the beginning of each new session.
iOS (Apple)
  • iOS 14.0 and greater
Compatible with M1 iPad Pro
Android OS
  • Android10.0 and greater
  • Android Go 10.0 and greater
Duo Mobile is not supported for use on ChromeOS or Huawei.
Blackberry OSOIT recommends upgrading to a newer smartphone for MFA capability. Duo Mobile for Blackberry is not available.

Training Resources

Getting Started

Duo Install

Associated Documents

  • .pdf

    Updating Duo with a new phone number .pdf

    Download Updating Duo with a new phone number (197 KB)

Frequently Asked Questions

Multi-Factor Authentication (MFA) with Duo (5)

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Wireless Connectivity

As a member of the university community, you have access to internal and external resources for securely connecting to the university network. OIT supports both wi-fi and cellular coverage on campus. Learn more about supported devices here.

Multi-Factor Authentication (MFA) with Duo (7)

Technology Training

Office of Information Technology offers several pathways for learning more about the technology software and programs that we offer. Sign up for training sessions to learn more about using Sitefinity, AV equipment, and Microsoft Office.

Multi-Factor Authentication (MFA) with Duo (2024)
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