Windows Longhorn build 4050 (idx02)

Build of Windows Longhorn
OS family
Timebomb2004-03-26 (+180 days)
Works in
Home Edition

Windows Longhorn build 4050 (idx02) is a Milestone 7 build of Windows Longhorn. On 23 January 2020, this build was listed on a thread by UX.Unleaked blog founder Grabberslasher to be released to the BetaArchive FTP, and was later released in the fifth set of his 33 Longhorn/Vista builds on 28 January 2020 as a checked/debug build alongside build 4085 (Lab07_N).[1] It is the second publicly available Home Edition pre-reset build of Longhorn.

Setup[edit | edit source]

Setup is mostly the same as the previous build of Windows Longhorn, but with a new Slate background.

Changes[edit | edit source]

Logon screen[edit | edit source]

  • The login screen has been revamped once again, now featuring just a solid-black background.
  • The Windows logo upon logging now comes up instead of coming down.

Bugs[edit | edit source]

Installation[edit | edit source]

  • This build requires either a debugger or replacing drivers with ones from the non-Check/Debug versions from build 4051 due to the large amount of assert errors that prevents setup from installing properly.[2]
  • Due to this build being a PDC build like build 4051, this build cannot be normally upgraded from a previous build and can only be clean installed.

Gallery[edit | edit source]

References[edit | edit source]