I have two towers running WIn 8.1 Pro, a laptop running Win 8.1 Home and an HTPC running Win 7. I downloaded the 64 bit .iso image and built a flash drive with rufus. I ran setup.exe on the flash drive on one of the towers and that worked. I start an Upgrade on my laptop and came to the window "Choose what to keep ". It has the statement "You can't keep Windows setting, personal files, and app because you're installing an edition of Windows that's different that the one you're currently using ". All my computers are running 64 bit versions and I thought the Win 10 install was smart enough to determine whether to install the home or enterprise version. It's the same install .iso that I successfully upgraded my Win 8.1 Pro to Win 10 Enterprise. If there is another .iso for the Home version, what is the link to the site.