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Why do I keep getting error message saying Firefox cannot connect to sites?

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CLD50s
CLD50s
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Error message:


Server not found Firefox can't find the server at onlineaccess.ncsecu.org. 

          *   Check the address for typing errors such as
         ww.example.com instead of
         www.example.com

   *   If you are unable to load any pages, check your computer's network
         connection.

   *   If your computer or network is protected by a firewall or proxy, make sure
         that Firefox is permitted to access the Web.
Error message: Server not found Firefox can't find the server at onlineaccess.ncsecu.org. * Check the address for typing errors such as ww.example.com instead of www.example.com * If you are unable to load any pages, check your computer's network connection. * If your computer or network is protected by a firewall or proxy, make sure that Firefox is permitted to access the Web.

Toate răspunsurile (1)

cor-el
cor-el
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A possible cause is security software (firewall) that blocks or restricts Firefox without informing you about that, possibly after detecting changes (update) to the Firefox program.

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

See Server Not Found - Troubleshoot connection problems and Configure firewalls so that Firefox can access the Internet and http://kb.mozillazine.org/Firewalls