Failed to Connect – Firefox Can’t Establish a Connection at…


Using Firefox on my Mac has been great, I’ve never had any problems with it. Actually, I shouldn’t say that we I haven’t had any problems with it, but when compared with Firefox on my PC, the problems with Firefox on my Mac have been few and far between, until recently, when I came across a single website that gives me the following error message:

Failed to Connect


Firefox can’t establish a connection to the server at sitename.com.


Though the site seems valid, the browser was unable to establish a connection.

  • Could the site be temporarily unavailable? Try again later.
  • Are you unable to browse other sites?  Check the computer’s network connection.
  • Is your computer or network protected by a firewall or proxy? Incorrect settings can interfere with Web browsing.

I’ve searched around and most sites say that this is a firewall problem, however, I don’t have any firewall software running on my Mac. I’m connected to a Linksys wireless router, and when connecting to the same router from my PC, I’m able to connect to the website with no problems.

Has anyone else come across this problem? And if so, what did you do to resolve the problem?

3 thoughts on “Failed to Connect – Firefox Can’t Establish a Connection at…”

  1. enter “about:config” in the location bar and type “fixup” in the filter field. You should see these three entries:

    browser.fixup.alternate.enabled default boolean true
    browser.fixup.alternate.prefix default string www.
    browser.fixup.alternate.suffix default string .com

    Thus, entering “mysite” as the address takes me to “www.mysite.com” after the address is fixed up. The setting that is probably wrong in your case is the “enabled” flag.

  2. what enabled flag? my settings are exactly like what you said it should be except i have an additional entry:
    browser.fixup.hide_user_pass defult boolean true
    btw this perticular site that doesnt open doesnt open on IE aswell.

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