Windows Longhorn build 4039 (Lab06 n.030827-1717)

Windows "Longhorn" build 4039 (with a build tag of 4039.Lab06_n.030827-1717) is a build of the Microsoft Windows "Longhorn" operating system, and among the first to include a working version of the Windows Aero visual style. Other features in this build include an updated Plex theme, a prototype of the Phodeo feature, and a new Communication History shell folder.

In this mid-Milestone 6 build, Explorer windows have somewhat been updated. This build is known for being quite unstable; install it at your own risk.

For all its instabilities, the DCE is known to work in this build and can even render Aero transparency, although it is extremely glitchy. The fix can be found at the TCB page for this build.

Features
DWM-can be activated with sbctl start command. Note that for VMware you need the 6.5.2 SVGA driver for DWM to work.

Outlook Express 7- can be run normally, but it depends on WinFS, if WinFS is off, it gives an error.

WinFS- it is composed of some services, can be turned off via services.msc.It causes a memory leak.