operating system-Vista. This message keeps popping up in the information bar: 'An add-on for this website failed to run. check the Security Settings in Internet Options for potential conflicts'. I have disabled each add-on one by one as suggested, but this did not help. I have followed all instructions in the information bar help concerning active-x controls which did not help either. This add-on message pops up on every website i activate and causes many problems. When i delete iteverything runs normally, but it keeps coming back. How can I permanently delete it? I use Windows Essential, McAfee and Avast and run them everyday. Nothing helps.