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

Windows Longhorn build 4039 (Lab06_n.030827-1717) is a Milestone 6 build of Windows Longhorn, which was shared online on 22 August 2007.

Setup
Setup is mostly similar to the earlier compilation of this build.

New features and changes

 * A prototype of the Phodeo feature is included in this build.
 * A new Communication History shell folder is also implemented.

Desktop Composition Engine
For all its instabilities, although this build's Desktop Composition Engine can show the Aero borders, it tends to be extremely buggy easily after a while.

Installation

 * Some copies of this build's installation media cannot be booted normally due to a call to a non-existent index in the  by  . To install this build in this case, either upgrade from a previous build or use a WinPE from a previous build.
 * On some installs, once copying files has completed, setup will fail to create a  file. Although booting will still be possible,   will default to.

Safe Mode
Safe Mode does not log you on due to the login process change in build 4032, as it will result in. This was later fixed in Windows Longhorn build 4042 (main).