Windows Longhorn build 4051

6.0.4051.idx02.031001-1340
Build of Windows Longhorn
Screenshot
Release nameWindows Longhorn Client Preview
OS familyWindows NT
Version number6.0
Build number4051
Architecturex86, x64, IA-64
Build labidx02
Compiled on2003-10-01
Expiration date
Timebomb+180 days after original install date
SKUs
Professional
About dialog
WindowsLonghorn-6.0.4051-About.png
TCB.png TCBGallery.png

Windows Longhorn build 4051 is a Milestone 7 build of Windows Longhorn. It is the build given to attendees of Microsoft's Professional Developers Conference 2003 in Los Angeles, California, held between 27 and 30 October as a cut-down release from the demo builds shown off at that conference, making it one of the only two pre-reset Longhorn builds to receive a widespread release by Microsoft, the other being build 4074. Interestingly enough, some Microsoft online documentation referred to 4051 as the "M6 build" and 4074 as being part of "M7.2".

This build comes in x86, x64 and IA-64 variants. The x64 version is not overly different from the x86 version, but uses the i386 setup process and several apps including Internet Explorer 6 have been optimized for x64 (often, the x86 versions do not run).

This build was compiled in evaluation mode and can be installed on the current date. Attempting to log onto the desktop once the timebomb has been triggered will return the user to the login screen.

NFO files[edit | edit source]

The following NFO files were included as part of the [Unknown] and WinBeta releases.

Unknown group

======================================================

===================Proudly Presents===================

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|          Windows Code Name Longhorn 4051 x64       |
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Here's the full tag: 6.0.4051.0 (idx02.031001-1340) x64


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|                    File Info                       |
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                File Size : 486 MB
                Bootable  : Yes
                Arch      : 64bit - amd64
                Protection: A good idea.
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|                Steps to Install                    |
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1. Burn or mount using a program of your choice.
2. Install using TCP8W-T8PQJ-WWRRH-QH76C-99FBW as key
3. Enjoy.

Greetz fly out to...

To me :)	

WinBeta

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                          | | /| / / / __ \/ __  / _ \/ __/ __ `/                      
                          | |/ |/ / / / / / /_/ /  __/ /_/ /_/ /                       
                          |__/|__/_/_/ /_/_____/\___/\__/\__,_/                        
  /-----------------------------------------------------------------------------------\
  |                     Microsoft Windows Longhorn PDC build #4051                    |
  <----------------------------------------------------------------------------------->
  |            - Source: Microsoft             - Type: Operating System               |
  |            - Packaged By: winbeta          - Image Format: ISO                    |
  <----------------------------------------------------------------------------------> 
  |            - Files: Longhorn_4051_PDC_WINBETA.part15.rxx                          |
  |            - Number of CD's: 1                - Protection: WPA                   |
  |            - Archives: 45 x 15 MB             - Release Date: 10/25/03            |
  <----------------------------------------------------------------------------------->
  |            - Review: http://msdn.microsoft.com/events/pdc/                        |
  <----------------------------------------------------------------------------------->
  |            - Hardware Requirements: 600+ Mhz CPU, 128 MB RAM, 1.5 GB HD Space     |
  <----------------------------------------------------------------------------------->
                                                                                       
  <---------------------------- R E L E A S E  N O T E S ----------------------------->
                                                                                       
    PDC 2003 is being widely heralded by the development community as a "must-attend"  
    event for enterprise developers, software architects, software engineers, Web      
    developers, and Web development managers wanting to stay in sync with Microsoft's  
    platform roadmap.                                                                  
    Be one of the first to look under the hood of "Longhorn."                          
    "Longhorn" is the code name for the next major release of Microsoft Windows® and   
    the innovation runs deep. At PDC 2003, you can be the first to get information on  
    how to build your applications to take advantage of "Longhorn," and be ready for   
    the future.                                                                        
                                                                                       
    Get up to speed on the next-generation database capabilities of "Yukon." With deep 
    XML support and Common Language Runtime integration, the next release of Microsoft 
    SQL Server, code named "Yukon," will take programmability, scalability,            
    availability,and business intelligence to the next level.                          
                                                                                       
    Experience the future of application development with Visual Studio "Whidbey."     
    Extend your power and productivity with upcoming versions of Microsoft Visual      
    Studio®. Unleash the power of advanced Web services, harness business processes,   
    and transform database programming with "Yukon." See the latest innovation in      
    Visual C#®, Visual C++®, Visual Basic®, and other programming languages.           
                                                                                       
    Take Web services to the next level with Microsoft .NET connected software. Web    
    services have become the industry choice for connecting systems. At PDC 2003,      
    you'll see where Web services are going next, with new capabilities, advanced      
    infrastructure tools, and new opportunities.                                       
                                                                                       
    Get early code                                                                     
    PDC attendees have always been the first to get developer previews of important    
    future products. The tradition continues with PDC 2003—get early, and in some cases,
    exclusive code for Windows "Longhorn," SQL Server "Yukon," Visual Studio "Whidbey,"
    and other technologies.                                                            
                                                                                       
    A great value.                                                                     
    Your PDC 2003 ID gets you into a keynote address on the next generation of computing
    from Chairman and Chief Software Architect Bill Gates, as well as break-out sessions,
    exclusive parties, interactive labs, a full-service food court, and much, much more.
                                                                                        
                                                                                        
  <----------------------------- I N S T A L L  N O T E S ---------------------------->
                                                                                       
  1.) Unpack.                                                                          
  2.) Burn to CD.                                                                      
  3.) Install.                                                                         
  4.) Use this CD-Key:                                                                 
  4.) Enjoy!                                                                           
                                                                                       
 <------------------------ ENJOY ANOTHER FINE RELEASE BY WiNBETA --------------------->
 |                                   Do More for less                                 |
 \------------------------------------------------------------------------------------/
                                                                                       
                            Contact us at winbeta@winbeta.org                          
                                                                                       

Editions and keys[edit | edit source]

Architecture Key
x86 TCP8W-T8PQJ-WWRRH-QH76C-99FBW

CKY24-Q8QRH-X3KMR-C6BCY-T847Y

AMD64 TCP8W-T8PQJ-WWRRH-QH76C-99FBW
IA-64 P9BT8-6HBG3-GRF29-BM92B-M973D

Setup[edit | edit source]

Although the setup process overall is similar to previous builds of Longhorn, this build cannot be upgraded from a previous build of Longhorn, due to this being a PDC build.

New features, changes, and fixes[edit | edit source]

Installation[edit | edit source]

This build can now be installed from CD boot after being frozen at the boot screen from build 4038 to 4050.

Explorer[edit | edit source]

  • New Documents and Photos and Videos libraries.
  • The prefix "My" was dropped in most of the remaining folders, resulting in new names for locations Computer, Network Places and Contacts.

Internet Explorer[edit | edit source]

Internet Explorer 6.05 included an add-on manager, a download manager, pop-up blocker, and a tool to quickly delete browsing history.

Other new features and changes[edit | edit source]

  • A new TCP/IP stack. IPv6 is also enabled by default in this new stack.
  • Self-Healing NTFS was added in this build.
  • The top buttons in the migration wizard now function.
  • The winver banner has been changed to align with the new Slate theme.

Bugs and quirks[edit | edit source]

Shell[edit | edit source]

The x64 and IA-64 compile of this build lacks the Sidebar and Explorer preview pane as a result of the absence of the Avalon framework, which was still being implemented onto different architectures at the time of compilation. It would eventually be completely ported over and included by default starting with the IA-64 compile of build 4067.

ClearType[edit | edit source]

Some copies of this build's x86 counterpart do not have ClearType font smoothing enabled by default.

Notifications[edit | edit source]

Notifications tend to reappear quite a lot, until the user reaches a certain point where they will finally close for real upon closing. To fix this, disable the Sidebar or click on Options, and then click on "Don't show this again".

TCP/IP stack[edit | edit source]

The TCP/IP stack has a few bugs, however, most of them were fixed in build 4053.

x64 build specifics[edit | edit source]

The x64 compile of this build suffers from performance regressions and is subject to a number of bugs, which also include a crash on startup. The build installs a barebone set of drivers during setup, and additionally lacks a significant majority of the WoW64 compatibility layer, resulting in most x86-based applications not being able to run properly. To achieve better performance, apply the Windows Classic theme.

Hardware Abstraction Layer bugcheck on Checked/Debug compile[edit | edit source]

Attempting to boot the x64 checked/debug version of this build on a host device that has the Hyper-V hypervisor enabled causes an exception within the Hardware Abstraction Layer's processor feature check, in turn triggering a 0x7E (SYSTEM_THREAD_EXCEPTION_NOT_HANDLED) bugcheck. The issue can be worked around by either substituting the hal.dll binary with the variant from the Free compile or by disabling Hyper-V (HypervisorLaunchType) from the host's boot configuration options.

Gallery[edit | edit source]

PDC 2003 discs[edit | edit source]