I have, as a standard, a Dell Stationery running dual boot windows 10 and windows 8.1. I have two Laptops, one running Windows 7, which is in use by my wife, and a rather old Laptop which I keep purely for installing and testing builds of Windows 10. I have put these all on the same homegroup. I share two printers out from the stationery, and gave access for most items, from the stationery, to all items on the other computers. No problems that I am aware of - so far! You say an error? Is it a message or..? I am not, at the moment, running VMware or any virtual program, so that could well be the problem. Perhaps someone using it can chip in here and advise