Windows Longhorn build 4087

Windows Longhorn build 4087 is a Milestone 7 build of Windows Longhorn. On 23 January 2020, this build was listed on a thread by UX.Unleaked blog founder Grabberslasher to be released to the BetaArchive FTP, and was released in the twelfth and final set of his 33 Longhorn/Vista builds on 4 February 2020 along with the main compile of 4042, build 4082 and build 5492.

Changes

 * The setup text during the setup and hardware portions has been changed in this build.

Bugs and quirks

 * Partition and format a drive from a previous or later build prior to starting installation.
 * 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.
 * Opening Help and Support results in an  crash.
 * Computer Management displays script errors.
 * Hardware and Devices folder does not open.
 * Phone and Modem Options Control Panel applet name is empty.
 * On some computers and virtualizers, the WinPE doesn't support the mouse, so you must use the keyboard to navigate the WinPE.
 * 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.