I recently had Microsoft Australia fix a problem with opening Office 2007. The problem was fixed but now, even though I have a very good internet connection, I cannot get on-line with IE, Firefox or Thunderbird. I am running Windows 7 Home Premium, 1TB HDD and 8 gig RAM. I have Nortons Internet Security.
I have seen this before and
when I turned off Norton Internet Security the problem went away. Turned it back on and it came back. Had to do some tweaking to Norton Internet Security settings to make it all work.
Have a Good internet conection but cannot open, IE, Firefox or Thunderbird
usually the problem is that in the ip & dns definitions in local area connection in windows are define specific addresses change to "obtain automatic dns and ip addresses change FW to automatic in general change setups to defaults