Windows Vista build 5231 (winmain_idx01)
| Build of Windows Vista | |
 | |
| OS family | Windows NT |
|---|---|
| Version number | 6.0 |
| Build number | 5231 |
| Build lab | winmain_idx01 |
| Compiled on | 2005-09-18 |
Windows Vista build 5231 (winmain_idx01) is an unleaked build of Windows Vista. Screenshots of this build from an internal video were posted by ReflectiaX on 30 April 2021. It is an earlier compile of the October 2005 Community Technology Preview build. This build was compiled from the winmain_idx01 branch, suggesting that it was recompiled several times.
