We all know the statements that Microsoft made about linux. They love Linux. They even wrote a blogpost about it. But that love falls short when you use Firefox on Linux. In my research on identity and access management, I have been exploring various login options. One of the approaches I tested is passwordless login using technologies like WebAuthn and YubiKey support. I experimented with this on various operating systems, browsers and Identity Providers, including Microsoft Entra ID.