Windows Longhorn: Difference between revisions

Revision as of 16:48, 29 March 2012

**Windows Longhorn**

Microsoft Windows codename Longhorn
Codename Preliminary name	Longhorn
Kernel version	NT 6.0
CPU architecture	x86, x64, IA-64
Release date	Unreleased
Support end	None
Preceded by	Windows XP
Succeeded by	Windows 7

Longhorn Architecture, as presented at PDC 2003

"Longhorn" was the codename for the planned successor of Windows XP. The project was cancelled and replaced with a new project with a similar codename - Longhorn Omega-13, that was renamed to Vista that became the real successor of XP. Early Vista builds often were referred to as just Longhorn most of the time and those two projects often were mistaken.

One of the biggest differences to Windows XP was that applications for Longhorn were supposed to be developed in managed languages, mainly C#, and that the "traditional" Win32 API should be replaced with managed .NET libraries in many places. During Longhorn development, many parts of the OS were rewritten in .NET 1.2 (can be seen as a prototype of .NET 2.0), causing bugs and memory leaks, especially in Windows Explorer.

One of the biggest mistakes that people commonly make is that they think Microsoft Codename Longhorn is based on Windows XP, when it's infact based on .NET Server (Server 2003) Release Candidate code.

Logos

During the development, the design team created several different logos. The old XP-style flag also is used in many places. Early builds with the Plex theme used a solid white version of the Windows flag, which was never seen before in Windows development.

Early Longhorn logo (M3-M5)
Early Longhorn logo used during WPF presentation
Used in some Aurora and Phodeo resources
Used in some Longhorn M7 resources
Longhorn glass flag

Concepts, presentations, demos and prototypes

Builds

No information available
Existence doubtful
Information or pictures available
Leaked or released

Possibly Milestone 1 and/or Milestone 2

Milestone 2

Milestone 3

Milestone 4

Milestone 5

NOTE: Build 4028 could easily be either Milestone 4 or Milestone 5 - the exact Milestone is still to confirm.

Milestone 5-6

NOTE: It has not yet been confirmed whether these are Milestone 5 or Milestone 6.

Milestone 6

Milestone 7

Development reset

See Windows Vista

External links

Windows Vista Builds List - winJade - includes Longhorn, Vista and Vista SP1 build tags
Microsoft Collection Book - with tips on how to install leaked "Longhorn" builds
Si vis pacem, para bellum - Grabberslasher's blog that describes several unleaked "Longhorn" builds

@@ Line 64: / Line 64: @@
 * '''[[Windows:Longhorn:3670.Lab06_N.020819-1749|Longhorn Build 3670.Lab06_N.020819-1749]]'''
 * [[Windows:Longhorn:3673.Lab01_N(henrygab).020621-1446|Longhorn Build 3673.Lab01_N(henrygab).020621-1446]]
-* '''''[[Windows:Longhorn:3683.Lab06_N.020923-1821|Longhorn Build
 === Milestone 3 ===
-.Lab06_N.020923-1821]]'''''
+* '''''[[Windows:Longhorn:3683.Lab06_N.020923-1821|Longhorn Build 3683.Lab06_N.020923-1821]]'''''
 * '''''[[Windows:Longhorn:3706.Lab06_N.021029-1731|Longhorn Build 3706.Lab06_N.021029-1731]]'''''
 * '''[[Windows:Longhorn:3708.Lab06_N.021108-1847|Longhorn Build 3708.Lab06_N.021108-1847]]'''