: It installs critical run-time libraries, including the C Runtime (CRT) , Standard C++ , MFC , ATL , and OpenMP . These handle basic tasks like math calculations, drawing windows, and managing computer memory.
The x64 version of the Visual C++ 2015 Redistributable was specifically designed for 64-bit Windows operating systems, which had become the norm by the mid-2010s. This version included 64-bit libraries and components that allowed applications built with Visual C++ 2015 to run smoothly on x64 systems.
Since most modern systems are 64-bit, download the vc_redist.x64.exe .
Multiple programs can use the same installation, saving disk space.