When the browser popup appears plug in and tap your YubiKey.

On the next screen, to enroll your security key click continue.

Select Security Key for the type of device you are adding and click continue.

Instead, click the Add a new device link in the left column and approve the new Duo login request using your already enrolled phone or other device. At the Duo Prompt do not approve the login.If you are already logged in you must logout and reload the page. Visit a Duo-protected webpage, such as.Note: It is suggested that your perform these steps in Google Chrome or Edge, as doing so will make the key automatically usable in all other supported browsers. If you previously enrolled other devices in Duo, you can easily add your new security key as an additional authenticator. Any YubiKey ( EXCEPT YubiKey’s U2F-only key!).An available USB port the same type as your key (USB-A or USB-C).A supported browser ( Chrome 70, Firefox 60, Safari 13 or Microsoft Edge 79 or later).

In order to use a YubiKey with Duo, you must have the following:

Duo yubikey