Windows Longhorn build 4084

Windows Longhorn build 4084 is a Milestone 7 build of Windows Longhorn. Prior to its leak, only the Preinstallation Environment of this build was available. The full build was leaked to BetaArchive on 16 October 2011.

Microsoft realized that in its current form, Longhorn was not feasible, so many features were removed and were scheduled to be added in subsequent versions of the operating system. This build, along with other builds bearing the 408x branch, are a result of that decision. This build is mostly componented and only includes a few features, running at the bare minimum working configuration.

Fixes

 * The Sounds control panel applet is now present again.
 * Device Manager is able to install or update drivers again, (unlike builds from 4081 to 4083).

Bugs and quirks

 * CD and DVD drives behave like local disks.
 * The Windows Classic theme will not function due to a broken  file.
 * Safe mode is broken and displays a BSOD.
 * WordPad and Outlook Express won't start due to bugs.
 * Help and Support causes an  restart.
 * Computer Management displays script errors.
 * On some computers and virtualizers, the WinPE doesn't support the mouse, so you must use the keyboard to navigate the WinPE.
 * Hardware and Devices folder does not open.
 * Task Scheduler from Control Panel shows a nameless folder and generic folder icon.
 * Phone and Modem Options Control Panel applet name is empty.
 * Enabling VGA Mode is required after installing video drivers or the system will initiate a BSOD with a error code 0x000000B4.

Installation

 * As typical of builds in this build range, it tends to take a long time to install and can be unstable.


 * Partition and format a drive from a previous or later build prior to starting installation.

No mouse driver in WinPE
On some computers and virtualizers, the WinPE doesn't support the mouse, so you must use the keyboard to navigate the WinPE. This seems to be related to using a PS/2 mouse, as USB mice seems to work fine for the setup.