Hi,
Based on my understanding the requirement is the Windows 10 May 2019 update which is the build 1903 of Windows 10, there are no small patches for enabling this feature.
https://fidoalliance.org/microsoft-achieves-fido2-certification-for-windows-hello
https://www.microsoft.com/security/blog/2019/06/10/advancing-windows-10-passwordless-platform
Best regards,
Leon