Why wont my Outlook or McAfee connect to the internet?

So here is the deal I have Comcast High Speed internet. It works fine intact im using it to post this. But when I try to check my email via outlook it cant connect to the server. When I do my updates with McAfee it says im not online. The only way I can get this to work is if I connect my sprint air card or go into safe mode w/ networking. What gives? There tech support is helping at all. All they due is change settings on outlook. So my question is what should I tell them or what can i do my self to get this to work?

Related posts: