I have Vega FEs, but I assure you "having the latest windows version" is the most irrelevant and overrated comment you see everywhere! I am using a Windows 10 Build 1501 and never had any problems, except for "remote desktop apps that need newer versions of windows" but never had any mining problems.
Edited: It is actually 1511
The damn thing practically installed itself, even though I had every precaution (disabled update service, turned off a couple of knobs and switches) in place, except making the network connection a "metered" connection (I think it's not possible on wired connections, stupid choice as I can, in theory, perfectly distribute a 3g connection using a modem with wires). Somehow it decided to re-enable the update service at some point, maybe during a driver update that was needed to operate with more than 8 gpu's, not sure, but it did.