All of my recording hardware and software works in Win 10. I did have to use a hack for my Roland PCR-500, and had to wait several days for Roland to issue Win 10 compatible drivers for my Studio-Capture and Octa-Capture.
The iLok License Manager works OK in Win 10.
My hardware (all working).
Behringer BCF2000
Roland Studio-Capture
Roland Octa-Capture
Frontier Tranzport (had to be installed in a Vista compatibility mode due to the drivers)
Roland PCR-500 (hacked Win 8.1 driver).