Unlocker

  This utility basically indicates which process is using (or has locked) a particular file,folder or drive.This can be very useful when messages like “Generic Volume is in use” when trying to safely remove a pen drive or “The file cannot be deleted” when you're trying to delete a file are displayed.I'll show a particular instance where this utility can be used in a future post.

   In such cases the utility will show the processes that is using the file and displays the option to stop the processes from using the file.(i.e. unlocking the file)

Usage:Install the application.Right-click any file,folder or drive and select the unlocker icon.

 The Unlocker Icon

 

     The next menu shows the list of processes using the file.Select unlock to free the file.

 

                          

                      












List of  Processes using the file

  And here's the download link http://www.filehippo.com/download_unlocker/