Visual Studio Tools For Office - Runtime ((new))

: It includes unmanaged DLLs that Office uses to load your custom add-ins.

The Visual Studio Tools for Office Runtime is a set of libraries (DLLs) required to run solutions built using VSTO in Visual Studio. If you create an Excel Add-in, a Word Document customization, or an Outlook VSTO Add-in, the end-user's computer must have this runtime installed for your code to work. visual studio tools for office runtime

Microsoft Visual Studio 2010 Tools for Office Runtime : It includes unmanaged DLLs that Office uses

This is the standard method for manually installing the runtime on a user's PC. a Word Document customization