> But MS went out of their way to only allow using it under Windows for some reason. If you want to log in to Azure/Office 365 from a different OS, you have to

> But MS went out of their way to only allow using it under Windows for some reason. If you want to log in to Azure/Office 365 from a different OS, you have to use some other way. According to Microsoft’s documentation, windows, macOS and Linux are all supported, but only edge and chrome on macOS and only chrome on Linux. https://docs.microsoft.com/en-us/azure/active-directory/authentication/fido2-compatibility https://docs.microsoft.com/en-us/azure/active-directory/auth... When we implemented this lately, we did find another somewhat annoying speedbump: If you use SAML-based SSO and log in with a yubikey, some SSO breaks since the application at the other end requires explicit password-based authentication. Fixing this requires assistance from the application provider who may be unwilling to fix this.