How to: View the Contents of the Global Assembly Cache
Use the Global Assembly Cache tool (Gacutil.exe) to view the contents of the global assembly cache.
To view a list of the assemblies in the global assembly cache
At the command prompt, type the following command:
In earlier versions of the .NET Framework, the Shfusion.dll Windows shell extension enabled you to view the global assembly cache in Windows Explorer. Beginning with the .NET Framework version 4, Shfusion.dll is obsolete.