How to use a YubiKey for two-factor autenthication on Linux Mint

This post will show you how to setup and use a YubiKey and the Yubico Authenticator application to sign in to a Microsoft Azure Cloud Account using Linux Mint 20 without the need for the Microsoft Authenticator being installed on your mobile phone: Yubico Authenticator desktop installation 1. Download and install the Yubico Authenticator AppImage: