Windows 7, MacOS, or Linux, maybe. Anything that doesn't require access to the Windows Store.
I've got Windows 10 on my machine at work, and on my little netbook-style laptop, but just Windows 7 and Linux on the closest things to "gaming machines" that I've got.
I've got Windows 10 on my machine at work, and on my little netbook-style laptop, but just Windows 7 and Linux on the closest things to "gaming machines" that I've got.