Process Explorer

Process Explorer is a free Windows utility from sysinternals.com. It provides detailed information about a process. For a particular process, you can view the DLLs it has loaded and the resource handles it has open. This is useful when Engines stop responding, wait on files indefinitely, or DLL issues of applications running on Engines. A Find capability enables you to track down a process that has a resource opened, such as a file, directory or Registry key, or to view the list of processes that have a DLL loaded.