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Firefox crashes

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I click the FireFox icon and its running but wont open up the window. When i check the Windows Task Manager, I can see it running but the browser just wont open up.

I click the FireFox icon and its running but wont open up the window. When i check the Windows Task Manager, I can see it running but the browser just wont open up.

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It is possible that your security software (firewall, anti-virus) 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 and the plugin-container 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:

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use safe mode for starting fx browser