The problem is, Microsoft Does Not Want to support people using older versions or things which permit emulating older versions. They saw what happened when the

The problem is, Microsoft Does Not Want to support people using older versions or things which permit emulating older versions. They saw what happened when they let people drag their feet on XP to avoid change, and are seeing it happen with 7, and have been scorched-earthing everywhere to avoid this recurring. That and being fed up with {customers coming to them having cherry-picked individual patches they thought were important from WSUS and then having unreplicable issues, users who just outright disabled updates of any severity} were why 10 is now a rolling release One Big Patch you cannot permanently disable updates for. It's a shame, because from a technical standpoint, Windows 10 has a lot of things I like, but from a usability standpoint, it's sometimes worse than Vista.