One of the original - and largest - changes is that, with "Longhorn," the .NET Framework would be integrated into the core Windows platform, deprecating the traditional Win32 API. During development, portions of the operating system were rewritten, causing memory leaks and instability, particularly in Windows Explorer.
Contrary to popular belief, most of the early builds of "Longhorn" are not based on Windows XP, but Windows Server 2003 (Build 3663) Release Candidate code.
These Buildtag are included for Build Labs, they are included some following like this:
- Lab01: Base
- Lab02: Networking
- Lab03: Server
- Lab04: Management
- Lab06: Desktop
- Lab07: IIS/COM+
Notice that there is no Lab05. This fifth lab is the ‘main branch’. As you can see, each lab has a different function or task. Take for example the sixth lab, better known as the shell or desktop lab. This lab in particular is an interesting one since all of the user interface work comes from this lab. The labs above are not exclusive to Longhorn, but were already were not only seen during Longhorn development, but also during the development of Windows XP and Server 2003.
Along these Builds, it was Leaked Screenshot for Build 3663, Which means its very old Build.
There was included Prototypes Longhorn Screenshot, you can see Windows:Longhorn/Prototypes.
A Fake Build for Longhorn 3551, it was Confirmed to be fake for using NT Custom Kernel.
Milestone 3 Edit
(The timestamps and build string is not known exactly for these last two builds).
Milestone 4 Edit
Milestone 5 Edit
Milestone 6 Edit
- After the compilation of build 4093, the development of Longhorn was reset, mainly because of the instability of the current Longhorn branch. At about 9PM, on the same day as the compilation of 4093, Microsoft stopped development of Windows Longhorn, and started fresh using Windows Server 2003 Service Pack 1 as a codebase. Development of Longhorn continued, albeit many features originally slated for inclusion were delayed or dropped to provide a more realistic operating system. Examples of this include WinFS, and what would become Windows Powershell.
- See Windows Vista for information on the post-reset (Omega-13) builds.