One of the things really annoying on Windows is the impossibility to rename/move a folder or a file despite, apparently, no program is using it. The dummy solution is to close ALL the program or even restart Windows! I do not want to do that! Well when this problem occurs, there is probably a program using your file ... but how to find it? The solution is to install this very simply and * FREE * utility called Unlocker available here . Once installed, it will autostart by default (icon in the systray) the program will prompt whenever there is a file o folder you cannot move, delete or rename. Once click and it's done! Pretty cool eh? Just a short note. This utility comes free of charge (however you can always donate!) but you have to know that the default installation installs also f*cking toolbar in your browsers and I hate toolbars! Solution? Just tell the installer you are not interested by unchecking the proper checkbox. Another short no...