Windows Longhorn build 4050 (idx02)

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). It is the second publicly available Home Edition pre-reset build of Longhorn.

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

Login screen

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

Bugs and quirks

 * This build seems to use the older  banner first seen in build 4005 instead of the new one from build 4044, likely because the change did not make into Home Edition at that time.

Installation

 * This build requires either a debugger or replacing drivers with ones from the non-Check/Debug version of build 4051 due to the large amount of assert errors that prevents setup from installing properly.
 * 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.