|Kernel version||NT 5.0|
|BIOS date||August 17, 1997|
|Key and TCB link||No key needed|
Windows NT 5.0 build 1631.1 is the last leaked pre-beta compilation of Windows NT 5.0, which became Windows 2000. This build does not differ much from the previous leaked build, 1592.1. The "Hardware Devices" tab has appeared in System Properties window. System font is slightly different.
- The original ISO is bootable, however soon after it boots an error (BSOD) shows up and computer reboots. This build has to be installed either by booting computer from floppy disk (for example using Windows 98 boot disk) or hard disk (for example using existing DOS installation) and then launching
\I386\WINNT.EXEfrom the 1585.1 CD. It is also possible to upgrade from existing Windows NT 4 installation.