Windows Longhorn build 4033 (idx01)

Windows Longhorn build 4033 (idx01) is a Milestone 6 build of Windows Longhorn. On 2020-01-23, 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 sixth set of his 33 Longhorn/Vista builds on 2020-01-29, alongside Windows Vista build 5487. This build is only available in the IA-64 architecture.

Bugs and quirks

 * Desktop Composition Engine is broken.
 * Search is broken and as a result, it crashes explorer.exe.
 * WinFS is not present.
 * USB Mass Storage is broken.
 * The File Save dialog is broken.
 * Sidebar is not present.
 * This build uses the i386-style setup instead of using Install.wim.
 * The login screen has no background, defaulting to black instead.