MFC MBCS DLL Add-on
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In Visual Studio 2015, the MFC library for multibyte character encoding (MBCS) is included in the Visual C++ setup components. Visual C++ and MFC are optional install configurations in Visual Studio setup. To make sure that MFC is installed, choose Custom in setup, and under Programming Languages, make sure that Visual C++ and Microsoft Foundation Classes for C++ are selected. If you have already installed Visual Studio, you will be prompted to install Visual C++ and/or MFC when you attempt to create an MFC project.
You need the multibyte DLLs in order to build an MFC project in Visual Studio 2015 that has the Character Set property set to Use Multi-Byte Character Set or Not Set.