Like most Free software, Mozilla does not have a phone number you can call. This forum is our support website. You can you the articles to search for solutions to your problem, or, post your question here and we will answer it :)

Are you having a problem with Firefox I can help you with?

See also:

• http://kb.mozillazine.org/Error_loading_websites

A possible cause is security software (firewall,anti-virus) that blocks or restricts Firefox or the plugin-container process without informing you, possibly after detecting changes (update) to the Firefox program.

Remove all rules for Firefox and the plugin-container from the permissions list in the firewall and let your firewall ask again for permission to get full unrestricted access to internet for Firefox and the plugin-container process and the updater process.

See:

• https://support.mozilla.org/kb/Server+not+found
• https://support.mozilla.org/kb/Firewalls