I know that how CLR
probing assembly but I want to know:Is CLR
probing assembly in GAC
folder?
The CLR will check the GAC prior to using the probing hints. The full details of the order in which assemblies are found are located on MSDN.
Basically, once the CLR knows which assembly (including version) needs to be found, it sees if it's loaded already, then checks the GAC, then probes using the probing hints.