Main Page

Welcome to BetaWiki!

An open encyclopedia of software history

Did you know...

Featured article

Windows 3.0 build 33 is a build of Windows 3.0 that was uploaded on 23 September 2022, along with some disks of its software development kit. The build was also mentioned in an internal Microsoft e-mail from August 1989, where it is noted that the build is slow due to extensive debugging hooks.

This is the last available build to use MS-DOS Executive as the default shell, as the next available build, build 55 already uses the newer Program Manager. However, references to the new shell can already found in the available copy, and it is likely that it was merely omitted for this release. It is also the last known build of Windows 3.0 to feature a debug watermark before returning in debug compiles of Windows 3.1.