I have a computer on a worgroup network in a small office. It is
running Win XP. It seems like eveytime there is an update run for McAfee, the proxy server settings in IE and Mozilla Firefox get checked and the user cannot access the internet until the proxy server is unchecked. I have run Malwarebytes and Spybot with little return for threats. No one on the network has this issue even though they are using McAfee.