They started much earlier than that, in 1999 with the release of IE5: https://technet.microsoft.com/en-us/library/ee692768.aspx https://technet.microsoft.com/e

They started much earlier than that, in 1999 with the release of IE5: https://technet.microsoft.com/en-us/library/ee692768.aspx https://technet.microsoft.com/en-us/library/ee692768.aspx Just tested their "get OS version" example on my Windows 10, works fine.