Windows Longhorn build 4050 (private/lab06 demo.031022)

6.0.4050.private/lab06_demo.031022-????
Build of Windows Longhorn
6.0.4050.private/lab06_demo.031022-????
OS family
Architecturex86
Compiled2003-10-22
Timebomb
Works in
SKUs
Professional

Windows Longhorn build 4050 (private/lab06_demo.031022) is a private build of Windows Longhorn. This build was shown during the PDC 2003 conference and is known to have Aurora and Aero transparency. During the demonstration Hillel Cooperman showed the new Aero transparency, which more than 40 people worked on for over a month,[1] and also opened an MS-DOS application to prove that this was not a concept but a real build. A copyright notice at the bottom left of this build can be seen, 

©, TM Microsoft Corp. All rights reserved. User interface is ™ and trade dress of Microsoft Corp.

On 27 September 2018, a BetaArchive member by the name of ReflectiaX claimed to have copy of this build.[2]

Gallery[edit | edit source]

  • Documents folder with Preview Pane Aurora

  • Toolbar/preview pane close-up

  • 4050privatelab06demo3.jpg
  • 4050privatelab06demo4.jpg
  • 4050privatelab06demo5.jpg

  • Transparent overlapping window frames

  • Sending an e-mail

  • 4050privatelab06demo8.jpg
  • 4050privatelab06demo9.jpg

  • Scrollbar preview

  • Clearest photo of the buildtag

References[edit | edit source]

  1. ↑ http://web.archive.org/web/20060314233250/http://www.simplegeek.com/PermaLink.aspx/a7eefa83-c31c-4c81-a42f-d5dd3bf15265
  2. ↑ https://www.betaarchive.com/forum/viewtopic.php?p=434315#p434315
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