Ever wondered which program has a particular file or directory open? Now you can find out. Process Explorer shows you information about which handles and DLLs processes have opened or loaded.
The Process Explorer display consists of two sub-windows. The top window always shows a list of the currently active processes, including the names of their owning accounts, whereas the information displayed in the bottom window depends on the mode that Process Explorer is in: if it is in handle mode you'll see the handles that the process selected in the top window has opened; if Process Explorer is in DLL mode you'll see the DLLs and memory-mapped files that the process has loaded. Process Explorer also has a powerful search capability that will quickly show you which processes have particular handles opened or DLLs loaded.
Process Explorer can be used to track down problems. For example, it provides a means to list or search for named resources that are held by a process or all processes. This can be used to track down what is holding a file open and preventing its use by another program. Or as another example, it can show the command lines used to start a program, allowing otherwise identical processes to be distinguished. Or like Task Manager, it can show a process that is maxing out the CPU, but unlike Task Manager it can show which thread (with the callstack) is using the CPU %u2013 information that is not even available under a debugger.
The unique capabilities of Process Explorer make it useful for tracking down DLL-version problems or handle leaks, and provide insight into the way Windows and applications work.
From Microsoft:Ever wondered which program has a particular file or directory open? Now you can find out.Process Explorer 15.22
is licensed as Freeware
for the Windows operating system / platform without restrictions. Process Explorer is available to all software users as a free download (Freeware).
Process Explorer Virus and Malware Tests:
For security reasons, you should also check out the Process Explorer virus and malware test
that has been uploaded; additional Process Explorer screenshots may be available, too.