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I can't log in for 3 days and get the message: Firefox can't establish a connection to the server at en-gb.start3.mozilla.com. I want to use your product

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JWardlaw
JWardlaw
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I have tried de-installing and re-installing. I can use Windows Explorer, but not Firefox, having previously successfully used it for 4 months.

I have tried de-installing and re-installing. I can use Windows Explorer, but not Firefox, having previously successfully used it for 4 months.

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cor-el
cor-el
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Did you check your security software (firewall)?

A possible cause is security software (firewall) that blocks or restricts Firefox without informing you about that, 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.

See Server Not Found - Troubleshoot connection problems and Configure firewalls so that Firefox can access the Internet and http://kb.mozillazine.org/Firewalls