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For this release, the Windows SDK is available as either a
DVD ISO image
so that you can burn your own DVD or as a
Web Install
that enables you to launch Setup over the Web to install and download only the components you select during setup.
NOTE: Please be aware that the Windows SDK is about 1.2 GB, which will take considerable time to download depending on your connection speed. To improve the download run the Web Setup and select only the individual components you need.