Duo Multi-factor Authentication

About Duo Multi-factor Authentication

Duo (formerly NetID 2-Step) is a secure multi-factor authentication method. Two steps are required for successful access. It is a safer way to log into most Texas State online services and adds an increased level of security for your account and Texas State confidential information.

  • Available to: Faculty, Staff, Students
  • Where to use: Online
  • Cost: Free

Get Started

When it comes to Duo, you have many options to authenticate:


Enrolling in Duo is easy. Here's how:

  1. Install the Duo Mobile app.
  2. Go to the Duo Enrollment Portal.
  3. Enter your NetID and password, and click Login.
  4. Follow the prompts to enroll in Duo.

Many United States-based technology companies are beginning to enforce restrictions to their services in some areas of the globe as tensions rise between nations. In order to comply with U.S. regulations, these technology companies will begin blocking access from users whose IP address originates in a country or region subject to economic and trade sanctions enforced by the U.S. Office of Foreign Assets Control (OFAC).

Due to these requirements, Texas State University cannot guarantee the delivery of its IT services to individuals located in OFAC-restricted regions. A current list of restricted regions can be found on OFAC’s website; however, Texas State is presently aware of the following OFAC-restricted locations.

  • Cuba
  • North Korea
  • Syria
  • Sudan
  • Iran
  • Certain regions within Ukraine
    • Crimea
    • Luhansk
    • Donetsk
    • Sevastopol

This is an evolving situation and the number of technology companies enforcing these restrictions may increase in the coming days and weeks. The following IT services have publicly disclosed when enforcement of restrictions will begin:​​​​​​

  • Zoom – OFAC restrictions began as of 2/24/2022
  • Duo – OFAC restrictions to begin on 5/5/2022

We will continue monitoring this situation and will notify you if any additional IT services become restricted or interrupted. If you believe you are in one of the OFAC-restricted locations or have questions, please contact the IT Assistance Center.


See the below help articles and FAQs for step-by-step instructions on how to use Duo.