How do I add a new device to Duo Multi-Factor Authentication (MFA)?

1. Add a New Device

To start enrolling a new device, log into https://2fa.ndus.edu and click Add a new device. If you do not see this link, the organization may not have enabled this function. Contact your Duo administrator to have a new device added.

Add a New Device Link

2. Choose your authentication method

Choose an authentication method and complete multi-factor authentication to begin adding a new device.

If you are adding a new device to replace one that you previously activated for Duo Push, don't select the Duo Push authentication method on this page unless you still have the original device. If you don't have the original device, but you have a new device with the same phone number, then you can authenticate with a phone call or SMS passcode.

You cannot add a new device from this page if you do not have access to any of your previously enrolled authentication devices; you'll need to contact your Duo administrator for help.

Authenticate to Add a Device

3. Follow the device enrollment process

Proceed with the device enrollment process as shown in the initial Enrollment Guide. As an example, let's add another phone.

Select Device Type

4. Enter your phone number

Enter and confirm the second phone number.

Enter and Confirm Phone Number

5. Select your operating system

Select the new phone's operating system.

Select Device Platform

6. Install and activate

Install Duo Mobile on the new phone and scan the barcode to activate.

Scan Barcode to Activate

7. You're all set

The new phone is added and listed with your other enrolled devices. You can click Add another device to start the enrollment process again and add another authenticator.

New Device Added

8. What's next?

Step 3. Install Duo Mobile


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