In few words, It is a must have tool for windows!. You may want to delete or rename a file and cannot ?!!! This small powerful tool discovers the attachment of this file to the system and unlocks it so that you can complete your action.
** Unlocker is an explorer extension that allows you with a simple right-click of the mouse on a file or folder to get rid of error message such as error deleting file or folder, cannot delete folder: it is used by another person or program.