In this case, I think "supported" means what Microsoft calls "Mainstream Support" (1). Windows 7 and 8.1 are both in "Extended Support", which only gets securit

In this case, I think "supported" means what Microsoft calls "Mainstream Support" (1). Windows 7 and 8.1 are both in "Extended Support", which only gets security updates. Mainstream support for Win7 ended in 2015, for Win8.1 in January 2018. The only mainstream supported versions of Windows are various Windows 10 editions. (1) https://support.microsoft.com/en-us/help/14085/microsoft-business-developer-and-desktop-operating-systems-policy https://support.microsoft.com/en-us/help/14085/microsoft-bus...