Windows Longhorn build 4042 (main)

Windows Longhorn build 4042 (main) is an Milestone 7 build of the Windows Longhorn operating system. It was compiled four days before the lab06_n compile, and as such, was technically a Milestone 6 build. This build still uses the old bootscreen and wallpaper from previous Milestone 6 builds and is less stable and usable than the lab06_n complie. This build still uses Pig Latin in its build string. As with 4040, both opaque and transparent Aero glass options are available. This build leaked on 2020-01-23.