After the download of 33.0, pages non-mozilla give unable to connect error, firewall exception has not helped

Now, I get this error:
Unable to connect

Firefox can't establish a connection to the server www.fanfiction.net.
Firefox can't establish a connection to the server www.gmail.com.
Firefox can't establish a connection with the server at www.facebook.com.
Firefox can't establish a connection to the server at www.youtube.com.

   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.

can connect at all on pages, firefox wasn't already on my list of firewall, added to the list without change

The announcement of chrome, which I prefer not to use if avoidable, any help or advice would be welcome.

Make a check of malware with several malware scanning of programs on the Windows computer.
Please scan with all programs, because each program detects a different malicious program.
All of these programs have free versions.

Make sure that you update each program to get the latest version of their databases before scanning.

Alternatively, you can write a check for an infection rootkit TDSSKiller.

See also:

Tags: Firefox

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