Windows NT 3.1 PDK 2 RC4 build
| Build of Windows NT 3.1 | |
 | |
| Release name | Release Candidate 4 |
|---|---|
| OS family | Windows NT |
| Version number | 1.0 |
| Architecture | x86 |
Windows NT 3.1 PDK 2 RC4 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 25 November 1991, so it was almost certainly compiled shortly before that.