Template:Infobox WindowsBuild Windows "Longhorn" build 4002 (with a build tag of 4002.Lab06 N(ntvbl06).030108-1926) is one of the first Milestone 4 builds of the Microsoft Windows "Longhorn" operating system. This build makes use of the Desktop Composition Engine seen in earlier Milestone 3 builds 3706 and 3718. Unlike later Milestone 4 builds, build 4002 uses the old setup based routine instead of the the newer one based on the WIM installation format. This build hasn't leaked, but details were [1] by Grabberslasher at his UX.Unleaked blog.
