Microsoft Visual Studio 2010 Tools For Office Runtime -x64- Instant

: It includes an unmanaged DLL (VSTOLoader.dll) that handles security checks and loads the appropriate solution assembly into its own application domain. Microsoft Learn Key Benefits & Performance Essential Stability

The upgrade path can occasionally clear out old cached pointers inside the global assembly cache (GAC). microsoft visual studio 2010 tools for office runtime -x64-

Which (and bitness) are you running?

Once the prerequisites are met, installing the x64 runtime is straightforward: : It includes an unmanaged DLL (VSTOLoader

: The x64 version specifically allows 64-bit editions of Office to host the .NET Framework Common Language Runtime (CLR). If you have a 64-bit Windows but use a 32-bit Office, you actually need the x86 runtime instead. Once the prerequisites are met, installing the x64

: A set of unmanaged DLLs ( VSTOEE.dll and VSTOLoader.dll ) that load the runtime and the solution assembly, performing security checks and creating application domains.

One of its most powerful features is its ability to support and execute solutions built not only in Visual Studio 2010 but also in later versions like 2012, 2013, and 2015.