Windows Longhorn/6.0.4015.main.030328-1500

Windows "Longhorn" build 4015, with a build tag of 4015.main.030328-1500 is a "Longhorn" Milestone 5 build. Most copies of this build's CD are not bootable due to corruption, since it results in an  error, and in that case it can only be upgraded from an earlier build.

This is the first Milestone 5 build, compiled on March 28, 2003 and was leaked on April 25, 2003 by WiNBETA, after some screenshots have been leaked since April 13, 2003. It has yet another wallpaper similar to the Milestone 4 one.

Windows Explorer has several memory leaks which can make this build difficult to use. Turning off the sidebar will usually stop these memory leaks.

The latter year in the Longhorn branding in winver has been changed back to 2003.

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.

New 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.
 * A playlist maker, the UI of which is similar to a Longhorn Days-era image from Heesung Koo's website.
 * Glass frames
 * Desktop aurora
 * Carousel view

Main changes

 * a new start screen;
 * new tabs in Start menu properties to edit the layout of the sidebar and the taskbar over the screen;
 * the new "Games" library;
 * a new thumbnail layout in the breadcrumb bar in case of multiple selections;
 * the new "Silent transfer" feature to quickly move digital pictures from a USB media to the computer hard disk;
 * the new center alignment for text in the window title bars;
 * a new desktop wallpaper.

.NFO file
The distributed release included a .nfo file created by "winbeta". /---\ |    Microsoft Windows Longhorn Alpha build #4015     | <---> |  - Source: Microsoft    - Type: Operating System    | |  - Packaged By: winbeta   - Image Format: ISO     | <--> |  - Files: en_longhorn_4015_pro-WinBeta.rxx        | |  - Number of CD's: 1    - Protection: WPA     | |  - Archives: 40 x 15 MB    - Release Date: 04/25/03   | <---> |  - Review: http://www.microsoft.com/longhorn (yeah right)    | <---> |  - Hardware Requirements: 600+ Mhz CPU, 128 MB RAM, 1.5 GB HD Space  | <---> < R E L E A S E N O T E S -> Its longhorn, its alpha. Don't expect it to work right. just a sneak peak at how things are going over at the build labs. enjoy <- I N S T A L L N O T E S > 1.) Unpack.                   2.) Burn to CD. 3.) Install.                   4.) Use this CD-Key: CKY24-Q8QRH-X3KMR-C6BCY-T847Y 4.) Enjoy!