This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Hierdie gesprek is in die argief. Vra asseblief 'n nuwe vraag as jy hulp nodig het.

Firefox suddenly stopped connecting to internet websites.

  • 4 antwoorde
  • 1 het hierdie probleem
  • 1 view
  • Laaste antwoord deur FredMcD

Rudy Rogalsky
Rudy Rogalsky
more options

Firefox suddenly stopped connecting to internet websites. I use McAfee anti-virus with their firewall. McAfee whitelists Firefox but I removed it from the whitelist and then put it back. I've tried uninstalling and re-installing with no change. I've removed all add-ons. I'm having to use a different browser but I want Firefox back.

Firefox suddenly stopped connecting to internet websites. I use McAfee anti-virus with their firewall. McAfee whitelists Firefox but I removed it from the whitelist and then put it back. I've tried uninstalling and re-installing with no change. I've removed all add-ons. I'm having to use a different browser but I want Firefox back.

All Replies (4)

FredMcD
FredMcD
more options

Did you contact McAfee support?

Rudy Rogalsky
Rudy Rogalsky Vraag-eienaar
more options

Yes I did. they looked at my computer remotely and finally concluded that McAfee was not the problem and that the problem was most likely in Firefox itself.

Terry
Terry
more options

Here are some articles on troubleshooting. I would try a new profile.

https://support.mozilla.org/en-US/kb/troubleshoot-and-diagnose-firefox-problems https://support.mozilla.org/en-US/kb/diagnose-firefox-issues-using-troubleshoot-mode https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems (also deals with hardware acceleration)

https://support.mozilla.org/en-US/kb/profile-manager-create-remove-switch-firefox-profiles https://support.mozilla.org/en-US/kb/recovering-important-data-from-an-old-profile https://support.mozilla.org/en-US/kb/profiles-where-firefox-stores-user-data#w_what-information-is-stored-in-my-profile

FredMcD
FredMcD
more options

Some problems occur when your Internet security program was set to trust the previous version of Firefox, but no longer recognizes your updated version as trusted. Now how to fix the problem: To allow Firefox to connect to the Internet again;

  • Make sure your Internet security software is up-to-date (i.e. you are running the latest version).
  • Remove Firefox from your program's list of trusted or recognized programs. For detailed instructions, see

Configure firewalls so that Firefox can access the Internet. {web link}

Type about:preferences#advanced<Enter> in the address box.

Under Advanced, Select Network.

[56+] Type about:preferences#general<enter> in the address box. Look for Network. +++++++++++++++++++++ Look for Configure How Firefox Connects and press the Settings button. If you are using a proxy, make sure those settings are correct. If there is no proxy, first try No Proxy. If there is a problem, then try System Proxy.