NOTICE: Our Community is moving. Get more information. Updated information on a New Login Process
Although the Microsoft Office Primary Interop Assemblies are stored in the GAC (Global Assembly Cache), they are not true dotNet assemblies. They are a COM (common object model) structure that has a dotNet wrapper around them to allow storage in the GAC. Consequently, to use the Interop Assemblies in Silk Test Workbench you must copy the required interop to another, non-GAC, folder.
However, using Windows Explorer to navigate to the GAC causes Windows Explorer to load a custom shell specifically for viewing the GAC. You won't be able to copy/cut/paste/delete from within this shell. The solution is to navigate directly to the GAC from the Run window on the Start orb. Enter the following command into the Run textbox:
You will now be able to copy your required Interop Assembly to a new folder where it can be referenced from Silk Test Workbench.
This does not affect Silk4Net. Visual Studio has the built-in functionality to reference the Interop Assemblies natively.