Windows Longhorn build 4093

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6.0.4093.main.040819-1215
Build of Windows Longhorn
6.0.4093.main.040819-1215
OS family
Architecturex86
Compiled2004-08-19
Timebomb2005-02-16 (+181 days)
Works in
About
LH4093 Winver.png
SKUs
Professional
Key
TCP8W-T8PQJ-WWRRH-QH76C-99FBW
TCB.png TCBGallery.png

Windows "Longhorn" build 4093 is the last 'main' compile of the original "Longhorn" project (based on the Server 2003 RC1 code-base) before development was reset with build 3790.1232. It was leaked on 2006-08-28, shortly after the closure of the original OSBetaArchive, and was labelled a farewell release. This build is highly unstable; which was typical of most later "Longhorn" builds.

It was the last pre-reset "Longhorn" build to be leaked, and one of the last to be compiled. This build's installation media cannot be booted up normally; this can be done using build 4033's Preinstallation Environment, and even then installation does take a long time to complete.

Many applications and features are unstable works-in-progress, and might not function as intended. However, most working features and applications can be launched using the Run command and certain features like Wordpad and Windows Classic theme has been fixed. The development reset occurred at 9 pm the same day this build was compiled and development moved to a new code base, which eventually became Windows Vista.

This is the last client build that does not require ACPI to work since it uses NTLDR. Later post-reset builds after 5001 require ACPI to operate since they use BOOTMGR instead.

Features[edit | edit source]

This build still includes the tree wallpaper used since build 4083, which is not entirely unexpected, considering this is among the last pre-reset builds compiled.

MXPlayer[edit | edit source]

This build has a new version of Media Player called MXPlayer. It can be accessed by running MXPlayer.exe in the installation directory, but it is incomplete and a lot of the options don't work or result in assertion errors.

Avalon Applications[edit | edit source]

It includes an Avalon-based Windows Movie Maker application. However, this version is highly unstable, and the debug prompts and assertion error messages that plague it make it nearly unusable. The Movie Maker can be found in C:\Windows\Program Files\Movie Maker 3\MovieMaker.exe.

This build also marks the return of the Avalon-based Display Properties dialog first seen in build 3683. However, most of the links simply redirect you back to the XP-style dialog. An Avalon-based Power dialog can be found in this build as well, though it is unstable. Likewise, there is an Avalon Wireless Presentation application in this build. The applets are LHDesk.exe, PowerCpl.exe, and WPWizard.exe in SYSTEM32, respectively.

Prototype Windows Product Application[edit | edit source]

Inside C:\Windows\Microsoft.NET\Windows\v6.0.4030\ is a file named LicenseUI.exe. It contains dialogs for a prototype version of Windows Product Activation, however most of the dialogs don't load and those that remain are highly unstable and incomplete. Some of the dialogs can be run via C:\Windows\Microsoft.NET\Windows\v6.0.4030\LicenseUI.exe -type=w -dlg=?, where ? is a number from 1 to 10, but only 2 and 3 load correctly.

Misc.[edit | edit source]

This build is the last build to include the original Windows Sidebar. It would be reintegrated into Vista, but only starting in build 5212 and as its own process instead of being integrated with explorer.exe. This build is also among the last to include WinFS.

Bugs[edit | edit source]

  • Safe mode is broken and displays a BSOD.
  • CD and DVD drives behave like local disks.
  • Help and Support causes an explorer.exe restart.
  • Explorer can randomly crash for no reason under normal use.

Gallery[edit | edit source]


External links[edit | edit source]