Windows NT 3.1 build 186

1.186
Build of Windows NT 3.1
Screenshot
OS familyWindows NT
Version number1.0
Build number186
Architecturex86

Windows NT 3.1 build 186 is a build of Windows NT 3.1, which was mentioned in the file TEXTHIST.XLS from the Windows NT 3.5 build 782.1 source code. This build was being tested on 22 August 1991, so it was almost certainly compiled shortly before that.