Purpose
If you would like to add another device to your account, add another phone number, or remove a device, this can be completed through the manage devices screen.
Procedure
- In your web browser, navigate to a resource that is protected by Duo (such as the Office 365 Portal (portal.office.com) or Box (utdallas.box.com).
- On the Duo authentication prompt, select My Settings & Devices. This step must be done before authenticating.
Note: Please note that the Duo authentication prompt will appear only if you log in from some other network and/or device than the one that you have used recently and have saved for 30 days.

3. Authenticate with Duo using your preferred method.
Note: If you have recently changed cellular devices but retain the same phone number, you will need to authenticate via "phone" or "SMS". The SMS option can be chosen by clicking "Enter a Passcode". An option will appear at the bottom of the box to have a passcode sent by text message.
Device Options
Once logged in, you have a number of options to select:
- Click on Add new device, this will direct you to authenticate with Duo.

- Authenticate with your preferred method.

- After authenticating, select the device you want to add, and click Continue. This will redirect you to another page where you add the device details.
- Click Save.

- After saving the new device, the page goes back to the existing devices. Here you can manage your devices, and change your preferred method to authenticate.