Windows Longhorn build 4038

Windows Longhorn build 4038 is a Milestone 6 build of Windows Longhorn. On 2020-01-23, this build was listed on a thread by UX.Unleaked blog founder Grabberslasher to be released to the BetaArchive FTP. It was leaked on 2020-01-30 in the seventh set of 33 other Longhorn builds, along with its server counterpart. This build has working 3D View with Carousel and Panorama. Desktop Composition Engine also works again, but has serious rendering problems.