Windows Longhorn build 4015 (main)

Windows "Longhorn" build 4015, with a build tag of 4015.main.030328-1500 is a "Longhorn" Milestone 5 build. It was leaked on 2003-04-28 by WiNBETA. Most copies of this build's CD are not bootable, since it results in an NTLDR is missing error.

This is the first Milestone 5 build, compiled on 2003-03-28 and leaked on 2003-04-28. It has yet another wallpaper similar to the Milestone 4 one.

Windows Explorer has several memory leaks which make this build difficult to use.

Please note: that there is a second build numbered 4015. This was compiled by build lab06 rather than main, and information on it is scarce.

Features

 * Parental controls
 * Additional configurability for the sidebar - including being able to put it below the start bar at the bottom of the screen
 * "Libraries"
 * Download manager - which was eventually dropped
 * WinFS - causes memory leaks
 * DCE - can be enabled with the uxdesk.dll,DceStart command in the Run dialog box. Note that a DX8 graphics card is required or DCE will crash. Only transparency included.