Windows Longhorn build 4030 (Lab06 n.030630-1724)

Windows Longhorn build 4030 (with a build tag of 4030.Lab06_n.030630-1724) is a Milestone 6 build of Windows Longhorn. Prior to its leak, two images were shown by Grabberslasher on his UX.Unleaked blog. On 23 January, this build was listed on a thread by the same user to be released to the BetaArchive FTP, and was later released in the tenth set of his 33 Longhorn/Vista builds on 2 February 2020.

Setup
Setup is identical to the previous build. However, upgrade setup is buggy, and once completed, lsass.exe will error out - causing the build to restart.