Windows Longhorn build 4033 (idx01)

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

This build was compiled in evaluation mode and can be installed on the current date.

Desktop Composition Engine
While the Desktop Composition Engine works in this build, the Desktop Composition Engine does not enable Direct3D shaders due to a bug. Because the DCE window frames rely on these shaders to function, it is not possible to enable them at this time.

File Explorer

 * Search and cut/copy-pasting are broken as they cause  to crash.
 * WinFS is not present. Thus, applications relying on it, such as Outlook Express will crash upon launching.
 * USB Mass Storage is broken.
 * The file saving dialog is broken if  is running.

TCP/IP bug

 * The TCP/IP stack malfunctions most of the time.

Windows Product Activation

 * Windows Product Activation is missing.

Gallery
Some screenshots here are courtesy of BetaArchive user linuxlove.