[Updated] The SDK is out for first Windows 10 RS4 build, 17025

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Microsoft today pushed out Windows 10 SDK build 17025. Judging from the change in build number, it is widely believed that this is the first Redstone 4 SDK build (via Neowin)

As usual, Windows developers can now find this latest SDK build by visiting the Windows Insider Download page. Please keep in mind that the latest release of Visual Studio 2017 is required to run this SDK, since it ensures full access to the features included in the preview.

Update: The full changelog is now available and we’ve included the highlights below.

Known Issues:

  • Installation on an operating system that is not a Windows 10 Insider Preview build is not supported and may fail.

Breaking Changes

  • New MIDL key words.
    As a part of the “modernizing IDL” effort, several new keywords are added to the midlrt tool. These new keywords will cause build breaks if they are encountered in IDL files.
  • The new keywords are:
  • If any of these keywords are used as an identifier, it will generate a build failure indicating a syntax error.

Keep in mind that Windows SDK Insider Preview is only supported on the Windows 10 Insider Preview operating system. Installation on an operating system that is not a Windows 10 Insider Preview build of Windows 10 is not supported and may fail.

The Windows 10 SDK is mainly for developers and is meant to provide the latest headers, libraries, metadata, and tools for building Windows 10 apps.