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.

ابحث في الدعم

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

Firefox 4 worked perfectly for me, but Firefox 5 says a connection could not be established.

  • 2 (ردّان اثنان)
  • 1 has this problem
  • 8 views
  • آخر ردّ كتبه finitarry

more options

Today I upgraded from Firefox 4.0.1 to Firefox 5.0.1. That's when all of a sudden I was unable to go to any sites.

"Unable to connect

Firefox can't establish a connection to the server at [insert site here]

The site could be temporarily unavailable or too busy. Try again in a few moments.

 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."
Today I upgraded from Firefox 4.0.1 to Firefox 5.0.1. That's when all of a sudden I was unable to go to any sites. "Unable to connect Firefox can't establish a connection to the server at [insert site here] The site could be temporarily unavailable or too busy. Try again in a few moments. 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."

All Replies (2)

more options

It is best for you to read this article Firefox can't load websites but other browsers can

more options

Maybe your firewall is blocking it. Some firewalls will block an application that is updated.