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Microsoft releases Windows 10 SDK Preview Build 16257 and Mobile Emulator Build 15235

Microsoft rolled out yesterday the Windows 10 SDK Preview Build 16257 and the Mobile Emulator Build 15235, which developers can now use in conjunction with the Windows 10 Insider build 16257 released a week ago. The latest version of the Fall Creators Update SDK brings some bug fixes and API changes, including the removal of the TreeView control (Microsoft says that it will be back in the next release).

There are also some known issues and breaking changes to be aware of, and you can get more details below:

Known Issues

  • Designer fails to render: When viewing the XAML in the Designer Window in Visual Studio, the controls fail to render.  This can be resolved by using Visual Studio 2017.3 Preview.
  • Compilation fails on non-Windows 10 platforms  (need to see if fixed): When building apps on previous platforms, you may get a build error
  • WRL projects fail to compile with MIDLRT error: When building my WRL project that contains a WinRT Component, the project no longer compiles.

Breaking Changes

ecmangen.exe removal from the SDK: ecmangen.exe will no longer ship with the Windows SDK. Developers who rely on ecmangen for event manifest creation are advised to install the Windows Creator Edition of the SDK to obtain the file. Developers may also use notepad or other XML editor of choice for manifest creation. A schema file is available on MSDN to aid in manifest creation, for tools that support it.

You can download this latest Preview SDK and Mobile Emulator from the developer section of Microsoft’s Insider website. Be aware that this latest build is only supported by Visual Studio 2017, which can be downloaded on this page.

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