Windows Server 2008 build 4031

Windows Server 2008 build 4031 is a pre-reset build of Windows Server 2008. 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 later released in the ninth set of his 33 Longhorn/Vista builds on 1 February 2020, alongside the main lab compile of 4085, the x86 version of 4083, the main lab compile of this build, its Lab06_n counterpart and build 5520. Unlike build 4028, this build uses the older i386 installation method.

Installation
You must format the disk outside of this build's setup, otherwise it will crash with the message Unknown Hard Error. This build also cannot be upgraded to by normal means; it must be clean installed. This build also often hangs or crashes on setup; VirtualBox is recommended to install this build.

Upgrade

 * To upgrade to this build from build 4028 you must use TweakNT to change the SKU to Web Server. Then you must replace the following files and directories from Windows Server 2003 build 3790.