-Because all MFC DLLs use the shared version of the C runtime library (CRT), You may also need to redistribute the CRT. The version of MFC that ships with Visual Studio 2015 uses the universal CRT library, which is distributed as part of Windows 10. To run an MFC application built by using Visual Studio 2015 on earlier versions of Windows, you must redistribute the Universal CRT. For information on how to redistribute the universal CRT as an operating system component or by using local deployment, see [Introducing the Universal CRT](https://devblogs.microsoft.com/cppblog/introducing-the-universal-crt/). To download the univeral CRT for central deployment on supported versions of Windows, see [Windows 10 Universal C Runtime](https://www.microsoft.com/download/details.aspx?id=48234). Redistributable architecture-specific versions of ucrtbase.dll for local deployment are found in the Windows SDK. By default, Visual Studio installs these in C:\Program Files (x86)\Windows Kits\10\Redist\ucrt\DLLs\ in an architecture-specific sub-directory.
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