Windows Longhorn build 4011

Windows Longhorn build 4011 is a Milestone 4 build of Windows Longhorn that was shared online on 21 July 2006. At this point, it is relatively the same as build 4008, though virtually all references to Windows XP have been removed.

The copyright date in the  banner, which displayed as "2006" in builds 4008 and 4005, was corrected in this build, now displaying as "1985-2003".

Setup
Although setup itself is mostly similar to build 4008's, aside from the boot screen, the user is not able to get past the product key section due to WinPE bugs and Setup bugs (missing exports). If one was to get the product key section to work, all inputted characters when typing in the product key will be uppercase, alongside dashes being added after every 5 letters.

New features

 * The Windows XP boot screen has been replaced with a new Longhorn boot screen, removing the final few references to Windows XP. However, Windows Messenger still throws out .NET Passport notifications which still mention Windows XP. The Windows XP Tour, which was removed in build 5048, is also still included.
 * The Parental Controls icon has been updated.
 * The Desktop Compositing Engine now works again, after previously being broken in build 4008. However, it only provides transparency effects.
 * The design of the notifications have been updated.
 * It is now possible to use the new Avalon taskbar/sidebar settings application while having the new taskbar enabled.
 * The title bar in Explorer has been slightly updated, with it now using a gradient instead of a solid color, alongside the icon of the running application.
 * The  banner's copyright date has been changed from 2006 to 2003.
 * The 3D View background has been added in this build and is similar to the one in build 4066. It can be enabled by right clicking the desktop, while holding the ⇧ Shift key, selecting View and then 3D View.
 * Along with that, desktop icons have received the spinning effect.

Sidebar
The Sidebar has gained some major uplifts with new tiles being added, including options, which serves the same purpose as right-clicking on the Sidebar. Other tiles, such as the Search tile, have been updated slightly, while a few others, such as the Windows Media Player tile, no longer requiring registry modifications to be available, most likely being updated as well.

Although the Windows Media Player tile no longer crashes upon adding a sound file unlike build 4032, you cannot play anything due to the buttons having little to no functionality. The Longhorn Status tile is still not available by default, but it can be enabled with the following registry file:

NFO
Build 4011 was leaked with the following NFO. NFO contents 

Bugs and quirks

 * Many drivers aren't installed by default during the hardware portion of setup and have to be installed manually.
 * Icons that are selected by the mouse or keyboard gradually become more pixelated.
 * Windows Storage Engine often crashes on startup.
 * The OOBE is broken and closes after the first page.
 * Task Manager stops responding for a few seconds upon starting a new task and also doesn't open upon pressing Ctrl.

Installation
There have been several different disc images for this build that were released online over the years. The copy of this build that is widely available has a corrupt  and as such will not install properly under any circumstances. The copy currently on BetaArchive's FTP server can install properly, but all long filenames in the  folder of its WinPE got truncated when the ISO was created, hence Setup cannot load the desired components which will lead to debug assertion failure errors. This issue can be fixed by restoring the filenames and rebuilding the ISO with the correct parameters.

Attempting to launch Command Prompt via ⇧ Shift in WinPE will trigger a bugcheck with error code.