Windows Vista build 5001 is a build of Windows Vista. 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 and multiple compiles of build 5000. Prior to its public release, two images were shown by the aforementioned user on the same blog. This is the last currently available client build of Windows to not require ACPI to function due to using NTLDR, as later post-reset builds require it due to using BOOTMGR instead. It is also the final build to support being installed to a user-defined folder instead of C:\Windows, as well as the last available client build of Windows, based on Windows Server 2003 (excluding Service Pack 3 builds of Windows XP) to use the i386 installation process, which was eventually replaced with the WIM installation process again since build 5048.
