I can't load any web pages (500 Internal Server Error)

I can't currently load web pages when using Firefox. I get a "500 Internal Server Error" standard page on each site. I tried with IE and there is no problem in loading pages.

I tried to create a new profile, uninstalling and reinstalling, put to upgrade to Firefox 4 (used previously 3) and uninstalling and wiping all profile information, but nothing has worked.

The problem began when a video player in Flash has crashed (channel4.com). Windows has been completely insensitive and I couldn't exit the full screen video. I tried pressing ESC, ctrl + ESC, ctrl + alt + delete etc but nothing worked and I had to hold the power button on the tower for 4 seconds to turn it off. When I started upward again once I was introduced to the screen when Windows fails to load normally and I chose the "start Windows normally", that had started Windows successfully. Since then I been unabe to view web pages in Fireox, I always get the 500 Internal Server Error page.

It is a strange and I'm out of ideas, any help would be appreciated because I really want to go back to using Firefox!

Thank you

What security (firewall) software do you have?

One possible cause is security software (firewall) that blocks or limits Firefox or plugin-container process without informing you, possibly after the detection of changes (update) for the Firefox program.

Delete all rules for Firefox in the list of permissions in the firewall and leave your firewall again ask permission to get full unlimited access to the internet for Firefox and the plugin-container.

See:

Tags: Firefox

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