I know I've seen commants on this before but Google is just swamped with\nstuff relating to 'Vista' and 'driver'.\n\nI have a little test utility to exercise a driver I'm working on. As a\nconvienence, it contains buttons to spawn devcon commands to\ninstall/update/restart my driver. The update button (via the .inf) causes\nthe latest build of my driver to be copied to system32\drivers and then\nfires up the new code.\n\nAll this works great on XP.\n\nOn Vista, either the copy takes place and it gets overwritten by the\nprevious version or the copy never takes place. The automatic driver restore\nmonster seems to be in the game.\n\nIs there any magic that can be applied from the command line (i.e. devcon)\nto make Vista behave?\n\nThe driver is in a system defined class and is signed using a test\ncertificate (pending receipt of real certificate)\n\nThanks,\nMickey.