How to disable User Account Control in Windows Vista ? Click Start, and then open up Control Panel, and type in "UAC" into the search box. You'll see a link for "Turn User Account Control (UAC) on or off": On the next screen you should uncheck the box for "Use User Account Control (UAC)", and then click on the OK button. If UAC is currently configured in Admin Approval Mode, the User Account Control message appears. Click Continue. Click Restart Now to apply the change right away