Windows Vista build 5000 (vbl_core.040803-2000) is the earliest known post-reset build of Windows Vista, based on a work-in-progress version of the Windows Server 2003 Service Pack 1 codebase. On 23 January 2020, this build was listed on a thread by UX.Unleaked blog founder Grabberslasher to be released to BetaArchive's FTP server, and was released in the third set of his 33 Longhorn/Vista builds on 26 January 2020, alongside build 4048, other compiles of this build, and build 5001.
New Features:
The winver and About Program banners in the Professional SKU has been crudely edited to replace the "XP" with "lh", standing for Longhorn.
Support for the Multilingual User Interface (MUI) feature has been implemented, although it is not functional as the resources located in it are duplicated in the actual file.
The rewritten Event Tracting for Windows architecture has been implemented in this build to an extent.
