I followed the instructions listed here to “program” the Yubikey and add it to our console and attach it to the user account. Duo Security Configuring YubiKeys for OTP use with Duo How to use your YubiKey tokens with...

I was able to authenticate by enabling NFC on my Android phone, and putting the Yubikey 5 NFC to the back of the phone. The phone then prompted me to open a Yubico site that gave me access to copy my passcode into the challenge field for the Office ...