JSI Tip 5532. Process Explorer freeware lets you determine what process has a file or folder open

Visit http://www.sysinternals.com/ntw2k/freeware/procexp.shtml to download the Process Explorer freeware. Process Explorer works on Windows 9x/Me, Windows NT 4.0, Windows 2000 and Windows XP.

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Note: Process Explorer has replaced HandleEx.

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 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.

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.

What's new in Version 5.2:

  • CPU usage column on Win9x
  • GDI and USER handle display in process properties (Win2K/XP)
  • Find dialog supports handle-type searching

What's new in version 5.1:

  • CPU usage column
  • Session IDs on systems that have Terminal Services
  • Process environment tab in process properties dialog
  • Display of process tree (parent/child relationships)
  • More efficient refresh
  • Debug process menu item that launches registered Win32 debugger

What's new in version 5.0:

  • Autorefresh
  • Service process highlighting
  • Highlight processes running in your account
  • Change process priority
  • Launch Depends if its on your PATH
  • Displays process group membership and privilege usage
  • Shows process start directory
  • Improved UI and performance

Other Process Explorer features include:

  • Support for full handle viewing on Win9x/Me (with the exception of Registry key handles)
  • Process icons
  • Refresh highlighting: new entries in the process, handle and DLL views are green, and deleted ones red
  • Listview tooltips
  • DLL descriptions in the DLL view
  • Highlights relocated DLLs
  • Jump-to-entry in the find dialog
  • Efficient refresh
  • Runs on Windows 9x/Me
  • Lists all process owners, even on Terminal Server systems

Process Explorer works on Windows 9x/Me, Windows NT 4.0, Windows 2000 and Windows XP.

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