For the past week, all of our computers are not working properly on some websites. My little sister is trying to get on ClubPenguin.com and whenever she clicks on a server, it says it can not connect to the server. My dad has been trying to access his work email, and whenever he clicks on "get passkey" it says it cant connect to the server and to try again later. I have done some diagnostics. I bypassed the router, and turned off the firewall. That didn't work. I reconnected the router and then I downloaded a portable version of firefox. Both websites worked fine in firefox. What is causing this problem?

I have had a similar problem in the past. Have you got "Phishing Filter" on? Pop Up blocker? or is the URL in red when you try to access the sites?

I fixed it. It was a problem with Comodo Firewall Pro. When I told it to give IE the web browser settings, it blocked some of the ports needed.