Windows 3.0 build 33

Windows 3.0 build 33 is a build of Windows 3.0 that was shared on 23 September 2022, along with some disks of its software development kit. It was also mentioned in an internal Microsoft e-mail from August 1989.

starts the build in 286 mode (using the kernel ) with a Windows 2.x-style bootscreen that animates, with a Windows 3.0 logo in the font used for the Microsoft logo of the era; and text below reading "We Believe in Magic!". starts the build in 386 mode (using ), but it is unknown exactly what systems it supports yet.

This is the last known build to use MS-DOS Executive as the default shell, since by the time the undated 1989 build had been compiled, it was switched to Program Manager and File Manager. While there is no setup application for this build, there is a  file, apparently left on the disk by mistake that mentions PROGMAN.EXE and FILEMAN.EXE, as well as several utilities that were apparently removed from the pre-release SDK distribution. Either this was a placeholder and the programs simply had not been started, or they were too unfinished and unstable to ship to developers. The contents of SETUP.INF also indicate that the Setup identifies as "Microsoft Windows/386 Version 3.00", and also supports installing a Windows runtime a la earlier versions of Windows.

Installation
Since this build does not ship with a setup program, the contents of the floppy disks should be manually copied to.