Help!! I am so frustrated right now! Latest update of Mcafee Security was installed on all 3 of my computers. I can't get to the internet with one because after diagnosis I get an windows troublestooting error " Security or Firewall settings may be blocking the connection. The other machine I am sending this on would not connect either and I had to remove all McAfee software, clean and try to download again with an online tech and twice I get to the installation part and it cannot install! I don't know what to do! I think my 3 licenses just renewed were a waste! Can someone help me?