Download Windows 8 Developer Build

Windows 8 Developer Preview is a pre-beta version of Windows 8 for developers. These downloads include pre-release software that may change without notice. The software is provided as is, and you bear the risk of using it. It may not be stable, operate correctly or work the way the final version of the software will. It should not be used in a production environment. The features and functionality in the pre-release software may not appear in the final version. Some product features and functionality may require advanced or additional hardware, or installation of other software.

You can download both 32-bit and 64-bit editions. The download also includes a 64-bit (x64) build with development tools to build apps. The download also includes a suite of sample applications which are merely illustrations of potential apps, not apps that Microsoft intends to ship with Windows 8.

Please note that you'll not be able to upgrade from Windows 7 installation, only clean installs are supported. This is a developer preview release and is not meant for production. It is not even a beta release. Microsoft confirms that they'll be updating the release with various quality updates and drivers over the coming weeks / months to test their overall update and telemetry mechanisms.

Download Windows 8 Developer Preview Build

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