Office of Information Technology

Reactivating Duo MFA on a new cell phone

Use these instructions when you get a new cellphone with the same number so that the new phone works with Duo.

Note that if you get a new cellphone with a different number, the instructions are similar but you'll be adding it as a new device instead of reactivating the old one.

Finally, if you don't have a secondary device in Duo MFA to use (or if you have trouble with these instructions), contact the Solutions Center (719.389.6449, its@coloradocollege.edu) for help.

Reactivate Duo on a new phone

Download the Duo Mobile app on your new phone from the App Store (iPhone) or Google Play Store (Android). Make sure to allow notifications if asked

Go to the CC single sign-in page and choose Email (Office 365), then enter your username and password

https://www.coloradocollege.edu/ssi

When the Duo authentication box comes up, click the "My Settings & Devices" link on the left side. Note that you may need to cancel the Duo push if you've set it to automatically do one

Complete the MFA process using one of your non-cell phone options to verify your identity (or your old phone if you still have it). If you don't have a secondary device, this process will not work for you and you'll need to contact the Solutions Center for assistance

Select "Device Options" next to your cell phone number

Select "Reactivate Duo Mobile"

Select the type of your new cell phone and then continue

Select "I have Duo mobile installed"

Open the Duo Mobile app on your new cell phone and tap "Add Account" or "Get Started." Allow the app to access your camera (it's just to scan the QR code)

Hold up your phone so the camera can see the code. Once the green checkmark appears, your new phone is linked and you can click continue

Finally, you can click "Back to Login" and complete the MFA process as normal

show all / hide all

Report an issue - Last updated: 02/03/2021