Well, it is good, somebody else my to help on a French forum, here is those whom he told me to make and that works very well: 1. You get back the files which are to unwind in TEMP 2. You install Kapersky with the switch /n /S 3. For the kept silent recording go in %ProgramFiles% \Fichiers communs\KAV Shared Files\ There you will find your key. Then you make a right click on key - > " add to key.reg " (Winrar) You double click on the created archives, - > option SFX - > advanced option SFX - > in general, you put as road of extraction %ProgramFiles%\Fichiers communs\KAV Shared Files\ and in mode, kept silent mark to rewrite all the files and hidden everything