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.

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.