Microsoft does not provide technical support for this software.
Things to Know Before You Start
The evaluation edition will expire and cannot be upgraded.
To upgrade, the evaluation must be uninstalled and a non-evaluation version of Windows must be re-installed from your original installation media.
Consider running the evaluation edition in a virtual environment or installing on a separate hard drive or partition. The will allow you to upgrade your original Windows installation to Windows 8.
During registration (required) you must login with a Microsoft account and provide your name, e-mail address and country.
You are required to activate the product online within 10 days after installing.
Once the evaluation is installed, you cannot upgrade. To revert to a previous version of Windows, you must do a clean install from your original installation media.
Activation and Usage Guidelines
Back up your files and settings before installing this evaluation and again prior to the 90-day expiration.
Upon installation, you will have 10 days to activate this evaluation online. Windows will prompt you to activate. A product key is not required for this software.
You must complete activation before August 15, 2013, to use this evaluation.
Once you activate, you have up to 90 days to use the software. You can track the amount of time you have left by referring to the "watermark" in the lower right corner of the Windows desktop.
If you fail to activate this evaluation within the 10-day grace period, or if your evaluation period expires, the desktop background will turn black, you will see a persistent desktop notification indicating that the system is not genuine, and the PC will shut down every hour losing unsaved work.
Following the evaluation period, you will need to replace the operating system on your test computer and reinstall all your programs and data. It is not possible to upgrade the evaluation to a licensed working version of Windows 8. A clean installation is required.
Windows 8 works on the same hardware that powers Windows 7:
Processor: 1 gigahertz (GHz) or faster
RAM: 1 gigabyte (GB) (32-bit) or 2 GB (64-bit)
Hard disk space: 20 GB
Graphics card: Microsoft DirectX 9 graphics device with WDDM driver
Additional requirements to use certain features:
To use touch, you need a tablet or a monitor that supports multitouch.
To access the Windows Store and to download and run apps, you need an active Internet connection and a screen resolution of at least 1024 x 768.
To snap apps, you need a screen resolution of at least 1366 x 768.
Internet access (ISP fees might apply)
Download the Windows 8 evaluation for developers
Downloading the Windows 8 Enterprise 90-day evaluation could take a few hours. The exact time will depend on your provider, bandwidth, and traffic. If your download gets interrupted, it will restart where it left off. See this download FAQ for details.
http://download.microsoft.com/download/3/E/B/3EB400DF-A3CC-4617-975C-CAA2470FBDDB/Akamai%20DLM.docxFor technical questions, please visit the Windows 8 developer technical forums.
http://social.msdn.microsoft.com/Forums/en-US/category/windowsappsSelect the Version You Want to Download
All downloads are provided as ISO images. Start by choosing the 32-bit or 64-bit version. Each version is available in the following languages: Chinese (Simplified), Chinese (Traditional), English, English (UK), French, German, Italian, Japanese, Korean, Portuguese (Brazil), and Spanish.