Windows 8 build 8400

6.2.8400.0.winmain_win8rc.120518-1423
Build of Windows 8
Screenshot
Release nameRelease Preview
OS familyWindows NT
Version number6.2
Build number8400
Build revision0
Architecturex86, x64, ARM32
Build labwinmain_win8rc
Compiled on2012-05-18
Expiration date
Timebomb2013-01-15 (+242 days)
About dialog
Windows8-6.2.8400-About.png
TCB.png TCBGallery.png

Windows 8 build 8400 is the official Release Preview build of Windows 8, which was officially released to the general public on 31 May 2012.[1][2]

The Simplified Chinese localization of this build was leaked and circulated on Chinese forums two days ahead of its official debut.[3]

An ARM version of this build was showcased on the Channel 9 blog post titled "Developing for Windows on ARM",[4] and was distributed to partners engaging in the Ecosystem Engineering Access Program (EEAP).[5] Its components were additionally released in the form of a set of Repair Content Packages,[6] which are used by DISM /Cleanup-Image /RestoreHealth to repair an existing Windows installation.[7]

Editions and keys[edit | edit source]

Edition / SKU Name Key
Core 2H7NK-3VJJY-HHY3Y-WM3T8-JFCRY
Professional GCNRF-BHBCM-W9YWM-VWQP6-TJBWR
ProfessionalWMC (edition upgrade only) MBFBV-W3DP2-2MVKN-PJCQD-KKTF7

Changes[edit | edit source]

User interface[edit | edit source]

Only minor differences can be observed across the user interface when compared against the previous build: the bug preventing task previews from displaying within the Windows shell has been fixed, and the Desktop Window Manager client area in Windows Explorer no longer extends to the navigation bar when the Ribbon user interface is not utilized. The space bar can now be used to dismiss the lock screen.

Minor visual changes to existing assets have also been introduced: the wallpaper first introduced in build 8375 has had its color temperature and saturation slightly adjusted, and the Windows Update icon has been updated to utilize its final design.

Bugs and quirks[edit | edit source]

Aero Lite transparency effects[edit | edit source]

When using the Windows Basic (Aero Lite) visual style, transparency effects can be enabled through the use of a bug in the Personalization Control Panel. To do so:

  1. Right-click the desktop and open up Personalization, then click on the "Window Color" link given at the bottom of the window. Keep the window open.
  2. Open a separate personalization window and apply the Windows Basic theme.
  3. Switch to the other personalization window that was opened at the start, uncheck and re-check the "Enable transparency" option and then click on the "Save changes" button. This will cause transparency effects to take effect.

Hanging on Sandy Bridge[edit | edit source]

This is the final build of Windows 8 where a bug on the Intel Processor Driver will cause the system to hang when installed on Intel Sandy Bridge hardware.[8] An updated Hardware Abstraction Layer which was eventually pushed via the KB2727113 update fixes this issue.[9]

Gallery[edit | edit source]

Out-of-box experience[edit | edit source]

  • Personalization

    Personalization

  • Express settings

    Express settings

  • Microsoft account page

    Microsoft account page

  • Local or Microsoft account page

    Local or Microsoft account page

  • Local account page

    Local account page

  • Finalizing settings

    Finalizing settings

  • First logon animation

    First logon animation

Interface[edit | edit source]

  • Login screen

    Login screen

  • Charms Bar

    Charms Bar

  • Basic Theme

    Basic Theme

  • Windows Basic (Aero Lite) visual style with transparency effects by means of a bug in the Personalization Control Panel

    Windows Basic (Aero Lite) visual style with transparency effects by means of a bug in the Personalization Control Panel

ARM32 version[edit | edit source]

  • ARM32 version

    Snapshot from "Developing for Windows on ARM"[4]

  • Desktop

    Desktop

  • System Properties

    System Properties

  • winver and Command Prompt

    winver and Command Prompt

  • Device Manager

    Device Manager

Simplified Chinese variant[edit | edit source]

  • Setup

    Setup

  • OOBE

    OOBE

  • Lock screen

    Lock screen

  • Start screen

    Start screen

  • Desktop

    Desktop

  • About dialog

    About dialog

References[edit | edit source]

  1. ↑ https://news.microsoft.com/2012/05/31/microsoft-announces-availability-of-windows-8-release-preview/
  2. ↑ Sinofsky, Steven. Delivering the Windows 8 Release Preview, Building Windows 8. 31 May 2012. Archived from the original on 5 July 2012.
  3. ↑ Warren, Tom. Windows 8 Release Preview leaks out ahead of official debut, The Verge. 29 May 2012.
  4. ↑ 4.0 4.1 Zander, Jason. Developing for Windows on ARM, Channel 9 Blog. 12 June 2012.
  5. ↑ WHCK WOA Driver momery test fail, Microsoft Visual Studio. 30 July 2012.
  6. ↑ https://app.prismdrive.com/drive/s/eYudoXLASPqH04HkZdgHAgDPj0rYyT
  7. ↑ xpduyson. [Tutorial] Fix lỗi Windows bằng dòng lệnh xịn hơn cả sfc /scannow !, WindowsVN. 10 August 2013. Archived from the original on 5 January 2014.
  8. ↑ https://web.archive.org/web/20120704125906/https://www.withinwindows.com/2012/06/26/more-info-about-the-windows-8-release-preview-freezing-issue/
  9. ↑ Bott, Ed. Surprise update fixes 'random hang' problem in Windows 8 Release Preview, ZDnet. 10 July 2012.
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