Windows 8 build 8400

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Build of Windows 8
OS family
Architecturex86, x64, ARM32
Timebomb2013-01-15 (+242 days)
Works in
TCB.png TCBGallery.png

Windows 8 build 8400 is the official Release Preview build of Windows 8. This build was released officially by Microsoft on 31 May 2012.

This is the first build of Windows 8 that drops support for processors without PAE, SSE2 and NX, as running on these processors will display a black screen with error prompts instead.

Editions and keys[edit | edit source]

Edition / SKU Name Key
Release Preview TK8TP-9JN6P-7X7WW-RFFTV-B7QPF

Bugs and quirks[edit | edit source]

Timebomb[edit | edit source]

It is one of the notable Windows 8 builds to not activate the timebomb if you install it on the current date.

Transparency effects in the Windows Basic theme[edit | edit source]

When using the Windows Basic visual style, transparency effects can be enabled by means of a bug in the Personalization Control Panel. To do so:

  1. Right-click the desktop and open up Personalization. Now 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. Go back to the other personalization window that you opened at the start, uncheck "Enable transparency" option and then re-check it. Click on "Save changes" button. This will cause "glass" effects.

Gallery[edit | edit source]