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every since i downloaded the new firefox and made it my default all my other browsers have been unable to access the internet why?

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firefox5 won't access certain parts of my work webpage and since i installed i cant connect with IE, Chrome or safari.

firefox5 won't access certain parts of my work webpage and since i installed i cant connect with IE, Chrome or safari.

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A possible cause is security software (firewall) 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 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: