Windows Longhorn build 4048

Windows Longhorn build 4048 is a Milestone 7 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, and was released in the third set of his 33 Longhorn/Vista builds on 2020-01-26, alongside multiple compiles of build 5000 and build 5001. This build's  is missing some of its files due to corruption, making this build uninstallable. However, a user on BetaWiki by the name of Lucasm had successfully installed this build on a hypervisor.

Setup
This setup contains a completely revamped setup interface, mimicking the design of the new Slate theme that was first included in build 4042 lab06. The computer name and disk partitioning pages have also been merged into a clean install summary page; while the computer name and disk partitioning pages still exist, they are essentially sub-pages that you can access via clicking buttons on the clean install summary page.