Managed assemblies that facilitate communication between your custom solution and the Office application.
The bitness of the VSTO Runtime must match the bitness of the Microsoft Office installation, not necessarily the Windows operating system. microsoft visual studio 2010 tools for office runtime -x64-
Conversely, if you have 32-bit Office installed on a 64-bit Windows system, you would actually need the x86 version of the runtime. System Requirements and Prerequisites microsoft visual studio 2010 tools for office runtime -x64-
Managed assemblies that facilitate communication between your custom solution and the Office application.
The bitness of the VSTO Runtime must match the bitness of the Microsoft Office installation, not necessarily the Windows operating system.
Conversely, if you have 32-bit Office installed on a 64-bit Windows system, you would actually need the x86 version of the runtime. System Requirements and Prerequisites
