How to install DirectX 11.1?

Windows 7 A few days ago, there was news that DirectX 11.1 only supports the latest Windows 8, Windows RT and Windows Server 2012. Microsoft has no plans to provide DirectX 11.1 for Windows 7.
This news has caused dissatisfaction among many Windows 7 users. In order to calm the public anger, Microsoft deliberately clarified in the official blog. In an official blog released today, Microsoft said that they actually quietly provided a way for Windows 7 to get some DirectX 11.1 features. This secret feature is hidden in IE10 released yesterday for Windows 7 users.
Microsoft said in the blog that Windows 8 includes the latest DirectX 11.1 runtime, which supports Direct3D 11.1, new Direct2D and DirectWrite, DXGI 1.2 and new WIC. Windows 7 SP1 users can get some of the "DirectX 11.1 runtime" through an update KB 2670838, which was included in the Windows 7 version of IE10 download released yesterday. KB 2670838 includes the latest components in DirectX 11.1, but is limited to the WDDM 1.1 driver on Windows 7.
The Windows 7 version of the IE10 preview released yesterday includes KB 2670838. If you have already installed Windows 7 version IE10, you have already got some DirectX 11.1 features. In addition to installing Windows 7 version of IE10, you can also download and install KB 2670838 separately.
KB 2670838 improves the functionality and performance of the following components:
——Direct2D
——DirectWrite
——Direct3D
——Windows Image Processing Component ( WIC)
——Windows Advanced Rasterization Platform (Twisted)
——Windows Animation Manager (WAM)
——XPS Document API
——H. 264 Video Decoder
——JPEG XR Codec