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Firefox can't establish a connection to the server


Unable to connect Firefox can't establish a connection to the server at www.google.com.

      *   The site could be temporarily unavailable or too busy. Try again in a few
   *   If you are unable to load any pages, check your computer's network
   *   If your computer or network is protected by a firewall or proxy, make sure
         that Firefox is permitted to access the Web.

Additional System Details


  • User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; GTB7.1; Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1) ; .NET CLR 2.0.50727; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022; .NET CLR 1.1.4322; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)

More Information

David McRitchie 321 solutions 3089 answers

see http://kb.mozillazine.org/Firewalls

--- on an unrelated note (Aug 30, 2011) ---

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Modified by David McRitchie

monkeypea 0 solutions 1 answers

got the same problem .. checked the firewalls but cant see anything amiss there. it happens with internet explorer too!

please help.. ive got an important deadline to meet and u cant do my research:(

ran trollys eumprocess windows firewall is on. no known processes

Modified by monkeypea

alefdog 0 solutions 4 answers

I've been having this problem for a while, ever since 6.0.1. I don't get any error or other messages, though. Firefox freezes and I have to kill it.

I tried starting in Safe Mode and that made no difference. Another installation on another PC doesn't seem to have the same problem. I'm about to save my profile, uninstall and completely reinstall Firefox. If that doesn't work, I'll probably use Chrome to get to Google (silly as that is) and wait for the next updated of FF.

alefdog 0 solutions 4 answers

OK, so I uninstalled and reinstalled a fresh copy of FF 6.0.2. I haven't added any extensions or themes, and FF still hangs when I try to go to google sites (main page, mail.google.com, maps.google.com). No crash report, no window asking if I want to send a crash report.

Enough for now.

  • Top 10 Contributor
  • Moderator
10777 solutions 97000 answers

Do a malware check with some malware scanning programs.
You need to scan with all programs because each program detects different malware.
Make sure that you update each program to get the latest version of their databases before doing a scan.

See also:

You can find the connection settings in Tools > Options > Advanced : Network : Connection

If you do not need to use a proxy to connect to internet then select "No Proxy" if the default "Use the system proxy settings" setting doesn't work.

See "Firefox connection settings":

cindybaconbits 0 solutions 1 answers

Firefox won't work but Chrome works fine. This is about the third time this has happened.

travelingsages 0 solutions 1 answers

I have the same problem with two laptops. One is on Vista and one is on 64 bit Windows 7. Internet Explorer and Chrome work fine but Firefox gets the error message above. Generally retrying 2 or 3 times will bring up the Google search screen.