Windows NT 3.1 build 259

Windows NT 3.1 build 259 is an unleaked build of Windows NT 3.1, mentioned in the file  from the Windows NT 4.0 source code. The included date suggests this build may have been compiled in April 1992.

// more compiler problems reported // on Build 259 by JosephH. // April 13, 1992.

It's also mentioned in files  and.

; BUGBUG: MPREXE calls this, remove for build 259