Visual Studio Help Viewer

On some Windows versions such as Windows 8 or Windows Server 2012, an issue with Microsoft Help Viewer and Internet Explorer's security being turned on can cause the Help content to be displayed as raw HTML code. To resolve the issue, you need to turn off the Internet Explorer Enhanced Security Configuration (IE ESC) for both administrators and users. Check the Microsoft Windows help for more information on how to do this.
By default, Visual Studio is configured to open the MSDN online for product documentation. To view the locally installed Enterprise Developer product Help inside Visual Studio, ensure that the Visual Studio Help Library is pointing to local help. From the Visual Studio menu click Help > Set Help Preferences > Launch in Help Browser.