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An open encyclopedia of software history

Did you know...

  • ...that Windows XP build 2223 had commented out code in its Business theme file that would allow the user to configure different colors based on its settings?
  • ...that Apple has officially released several developer releases of what would later become Mac OS X for the x86 architecture as a part of its NeXT legacy, and secretly continued to maintain the port until Tiger?
  • ...that Windows Server 2003 has been renamed four times during development, before settling on its final name?
  • ...that some builds of Windows 98 and Windows 2000 contained a Show Desktop button on the taskbar, which would be scrapped later until Windows 7 build 6568?
  • ...that no build of Windows Vista (including pre-reset) actually used or even included the widespread Longhorn sound scheme?

Featured article

Windows NT 3.1 build 196 is the earliest publicly released build of Windows NT 3.1, which was compiled and sent out to a limited number of developers in mid-September 1991 as a trial before the Fall COMDEX 1991 build. Compared to it, this build is noticeably less stable and has the tendency to hang even during common tasks such as opening new windows. Many of the hangs are caused by the system breaking to the debugger following an unsatisfied assertion condition.

This build has several differences compared to later builds, such as an older bootloader with a primitive dual boot menu which supports either a MS-DOS or OS/2 install on the same disk as NT, an early version of the Portable Executable format, or the lack of a self-hosted installer. According to the documentation included with the build, this is also one of the first builds to implement security.


Recently shared builds

Windows NT 3.1

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