Add/remove a shared assembly to/from the .NET GAC
Each computer that .NET is installed on has a Global Assembly
Cache (GAC) located in the Assembly folder in the Windows
directory (usually: C:\WinNT\Assembly). The GAC contains information about
shared assemblies which are components that can be shared among
several applications (Ex. a DLL).
Shared assemblies must have globally unique names derived from their
strong names (public keys generated to distinguish assemblies from
other assemblies that may have the same names) which is Microsoft's solution to
DLL hell. The GAC, not the registry, is the store for this information. When an
application loads the GAC is examined by the Common Language Runtime to
determine if the version of a shared component exists that is compatible with
the one referenced by the application.
The gacutil.exe that ships with .NET can be used to
add or remove a shared assembly from the GAC.
To add a shared assembly, from the command line enter:
gacutil.exe /i myassembly.dll
To remove a shared assembly, from the command line enter:
gacutil.exe /u myassembly.dll
When viewing the GAC in Windows Explorer shfusion.dll
is used to provide the user interface. You can locate and rename this DLL to
view the GAC like any other folder.
To learn more about assemblies and the Global Assemblies Cache,