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Firefox will not connect to certain major `websites" Why? I can go to Google and access

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kjsandin
kjsandin
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In the last 4 days Firefox will not connect/find certain major websites. Basically says that server not found. 

 What's the deal here?  I use windows 7 and have the most current
firefox update.
In the last 4 days Firefox will not connect/find certain major websites. Basically says that server not found. What's the deal here? I use windows 7 and have the most current firefox update.

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cor-el
cor-el
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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: