department menu

Multifactor Authentication (MFA)

Setting up MFA takes 10 minutes and keeps you and CSUSM secure!

2 step authentication process


MFA is sometimes called two-factor or 2-step verification. It means that when you log in, you may be required to use an additional step such as entering a code delivered to your mobile phone. It is another layer of protection for your important accounts. Once MFA is activated, you will be required to log in with both your campus password and an additional security measure.

  • Industry-leading tool for security - Used by federal, healthcare, financial services, education institutions, and more, Duo's 2-Step login process protects you and University services from phishing and other cyberattacks.

  • Protects your identity - Two methods are required to verify your identity - preventing anyone but you from logging in, even if they know your password.

IITS recommends registering more than one device or number whenever possible in the event of an issue where one device is unavailable.
duo app

Configuring Duo MFA

How to Setup & Install DUO

Applications using DUO 

  • Peoplesoft CS/PeopleSoft Student Administration
  • Peoplesoft CFS/PeopleSoft Finance (Offsite)

Video Demonstrations

Faculty and staff that need assistance should contact


  • How to use DUO Push

    Once you login using your campus credentials, choose your desired authentication method (Duo Push is recommended).

    To avoid being prompted for Duo multiple times a day, check the box “Remember me for 24 hours

                        duo push

    Open the Duo Mobile app

    If you chose Send me a Push, click on the green bar that says “Request Waiting. Tap to Respond…”

    If you chose Enter a Passcode, input the 6 digit number in your Duo app.

                        tap to respond

    Click “Approve”. You will now be logged in.


  • What Happens If I Lose or Forget My Phone?

    If you lose your phone or suspect it has been stolen, contact the helpdesk at 760-750-4790 immediately. The team can disable your phone from being able to authenticate with multi-factor authentication, and can assist you with logging in with another method.

  • How do I add multiple devices to my account?

    Please go to the My Settings & Devices section in DUO to update your phone information.



  • How do I allow my browser to remember me for 24 hours?

    To avoid being prompted by Duo multiple times a day, select the checkbox next to Remember Me for 24 hours during log-in.

    Due to some technical limitations on Remember Me for 24 hours:

    • It won’t carry over between different computers, or when switching between web browsers (from Chrome to Firefox, for example).

    • It may not carry over between different internet providers, campus services, if you block cookies, or are using Incognito mode.

  • What if I need to change my phone number?

    Please contact the helpdesk at 760-750-4790. After verifying your identity, we will change your phone number and also assist with setting up Duo Mobile.

  • What if I am using my mobile device to activate Duo and cannot scan the QR code?

    If you are unable to scan the QR code because you are using the device you are trying to scan in order to activate your DUO, there is alternative way by sending a code to your CSUSM email:

    1. When you are prompted in the CSUSM app, click "Take me to Duo mobile"

    Take me to Duo


    2. Next, you will be prompted to scan the QR code, but since you are on the mobile device and cannot scan it, click the link Email me an activation link instead.

    Email Duo Code


    3. Please input your CSUSM email address to send the code to. Once you receive that code, please input that code on the following screen. You will then have activated Duo!

    Input Email Code

  • Duo gave me a prompt "We have detected some security issues with your device"

    If you are getting prompted by Duo at the bottom of the Duo Mobile app, click "Fix Now" 

     iOS Fix Now

    It will show exactly what the issue is (below is an example of iOS being out of date)

     iOS issue detected

    Below explains the importance of updating the OS version of your phone to ensure attackers cannot exploit vulnerabilities.

    why should I update iOS screen

  • What if I don't have a cellular connection?

    The DUO app has a feature that will give you a special number to input for offline use. 

    Take me to Duo

  • Where do I go to install the app on my Mobile Device?

  • If you require assistance from an administrator

    Please fill out this MFA Identity Verification Form. Once the form is submitted, our staff will review the submission and attempt to verify your identity using our verification tool.  If successful, we will contact you using the provided email address to send updates regarding your request to modify MFA settings.

    MFA Identity Verification Form