Register DLL to GAC - programmatically

clipped from www.codeguru.com The .NET Configuration Utility requires administrative privileges to add an assembly to the GAC, and the GACUTIL is available only when the Framework SDK is installed. A machine with the .NET Framework but without the SDK won't have GACUTIL. Based on the advice in the MSDN article, a developer would have to make every potential user of a VSTO application into a local administrator (at least temporarily) or get the Framework SDK installed so GACUTIL can be called from an MSI package, which runs under the privileges of an administrator. Thankfully, the C++ developer has a third option: programmatically modifying the GAC with the Fusion APIs. typedef HRESULT (__stdcall *CreateAsmCache)(IAssemblyCache **ppAsmCache, DWORD dwReserved); HMODULE g_FusionDll; CreateAsmCache g_pfnCreateAssemblyCache;