Microsoft has released Microsoft Visual C++ 2010 Service Pack 1 Compiler Update for the Windows SDK 7.1
Install this update to restore the Visual C++ compilers and libraries that may have been removed when Visual Studio 2010 Service Pack 1 (SP1) was installed. The compilers and libraries are part of the Microsoft Windows Software Development Kit for Windows 7 and the .NET Framework 4 (later referred to as the Windows SDK 7.1).Microsoft Visual C++ 2010 Service Pack 1 Compiler Update for the Windows SDK 7.1