My understanding is the the Windows NT was influenced by the design of the Mach kernel, but it certainly wasn't itself the Mach kernel. I have a vague recollect

My understanding is the the Windows NT was influenced by the design of the Mach kernel, but it certainly wasn't itself the Mach kernel. I have a vague recollection of a discussion of some of the NT kernel designers being old Multics people (so that most of the extant OSes are in same way or other influenced by Multics). But I've never enjoyed using any of the versions of DOS/Windows. I surely would have gone into computer science if my experience in late high school/university hadn't been almost exclusively Windows (in contrast to my earlier experience with Atari computers).