How to: Remove an Assembly from the Global Assembly Cache
Use the Global Assembly Cache tool (Gacutil.exe) to remove an assembly from the global assembly cache.
To remove an assembly from the global assembly cache
At the command prompt, type the following command:
gacutil –u <assembly name>
In this command, assembly name is the name of the assembly to remove from the global assembly cache.
The following example removes an assembly named hello.dll from the global assembly cache.
gacutil -u hello
The .NET Framework SDK also provides a Windows shell extension called the Assembly Cache Viewer (Shfusion.dll), which you can use to remove assemblies from the global assembly cache.
See Also
Reference
Global Assembly Cache Tool (Gacutil.exe)
Assembly Cache Viewer (Shfusion.dll)