Hi, jaclaz, i read the article in the link, and then i decide to use elevate.exe to bypass the uac. i create this batch file to invoke elevate.exe and pass as parameter the file .cmd that do a reg import. elevate.exe C:\Users\simo\Desktop\esperimento\terza_versione\mynicecmd.cmd elevate.exe give me the correct permission to write key in registry and do it correctly, but it dont bypass the uac control and also show this message. where i'm wrong? thanks Simone