Windows Longhorn build 4011

Windows Longhorn build 4011 is a Milestone 4 build of Windows Longhorn. This build is not much different from build 4008, although by this point, virtually all references to Windows XP have been removed.

Setup
Although setup itself is similar to Windows Longhorn build 4008's, aside from the boot screen, you are not able to get past the product key section due to missing exports.

New features

 * The Windows XP boot screen has been replaced with a new Longhorn boot screen, removing the final few references to Windows XP.
 * Parental Controls has a completely new icon.
 * The Desktop Composition Engine now works again, in build 4008 it was broken. However, it only provides transparency effects now.
 * Notifications now have a new look to them.

Sidebar
The Sidebar has gained some major uplifts. New tiles have been added, including options (which serves the same purpose as right-clicking on the Sidebar). Other tiles (such as the Search tile) have been modified slightly, while a few others (such as the Windows Media Player tile) no longer require registry modifications to be available.

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

Bugs and quirks

 * Icons that are selected by the mouse or keyboard become more pixelated.
 * Many drivers aren't installed by default during the hardware portion of setup and has to be installed manually.
 * The OOBE is broken unlike the previous builds and closes after the first page.
 * Windows Storage Engine often crashes on startup.

Installation
There have been several different disc images for this build available 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 circumstance. The copy currently on BetaArchive can install properly, but has assert errors when attempting to clean install due to the WinPE (Windows Preinstallation Environment) being partially corrupted. Alongside this, you cannot type in a product key, and attempting to launch command prompt via Shift+F10 will just initiate a bluescreen, with error code 0x0000008E.

To fix the assert errors, use the installation media from build 4008 and replace the  from the build 4008 installation media to the one from this build. Alternatively, the user can upgrade from a previous build as well.