Yes it still is. I found both the NT 4 leak and the Windows 2000 leak while I was doing some research into the Windows kernel. Lots of cool stuff in both; the

Yes it still is. I found both the NT 4 leak and the Windows 2000 leak while I was doing some research into the Windows kernel. Lots of cool stuff in both; the NT 4 leak had a lot more of the cool kernel stuff, like a DEC Alpha HAL. I don’t recall the links and won’t share them. I also notified Microsoft about them when I found them, so they may have been taken down already. But it’s the internet so realistically they’re still up somewhere. You can also find the Windows Research Kernel, which is slightly sanitized and leaves out NTFS, HAL, PnP, and power management, but is slightly newer coming from the win 2k3 era.