Duo Support

This page describes frequently asked questions for issues related to Duo 2-Factor Authentication.

How do I find out more about Duo?

Please refer to duo.colostate.edu for more information, FAQs, and instructional videos.

I changed phones, how do I get Duo back?

If your phone number stayed the same

1.) Go to netid.colostate.edu.

2.) Under "View/Update", select "Two Factor Authentication (Duo)".

3.) Sign in and authenticate using the "Call Me" option.

4.) You'll now see a list of your Duo devices. On the appropriate device, select Reactivate or Activate (whichever appears).

5.) Use the Duo Mobile App to scan the QR code that appears.

If your phone number changed, or the "Call Me" option doesn't work

Please email us at help@colostate.edu with the following information:

Your NetID
Your current phone number
Your old phone number (if applicable)
Your recovery email. This is a personal email (NOT your @colostate.edu or @rams.colostate.edu email) that you have affiliated with your CSU account for account activation or password recovery.
Whether or not your phone can receive texts/calls

How do I add another device on Duo?

These instructions assume you have access to at least one of your current Duo devices. If this is not the case, please see the above instructions on how to get access to Duo if your phones changed.

1.) Go to netid.colostate.edu.

2.) Under "View/Update", select "Two Factor Authentication (Duo)".

3.) Sign in and authenticate.

4.) You'll now see a list of your Duo devices. Add a new device.

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