If you're a university student, Microsoft has an academic program where you get access to the "Windows research kernel", which is the NT kernel. Also, the Wind

If you're a university student, Microsoft has an academic program where you get access to the "Windows research kernel", which is the NT kernel. Also, the Windows 2000 code was leaked back in 2004; there's a torrent floating around in your nearest pirate bay. Disclaimer: I'm not promoting doing anything illegal.