Windows NT 4.0 build 1381.1 (pre-release)

Windows NT 4.0 build 1381.1 is the RTM build of Windows NT 4.0 that was recompiled. This is the original compile, which has a missing dot on the boot screen and earlier file dates. It was going to be the RTM build and was apparently already being shipped when a major bug was found, so it had to be recompiled.

Both Workstation and Server editions have been found and are available on BetaArchive FTP. Both editions were scene leaked within a few days in 1996-08, soon followed by the recompiled build.