If your computer or network is protected by a firewall or proxy, make sure that Firefox is permitted to access the Web.
If your computer or network is protected by a firewall or proxy, make sure
that Firefox is permitted to access the Web.
If your computer or network is protected by a firewall or proxy, make sure
that Firefox is permitted to access the Web.
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If your computer or network is protected by a firewall or proxy, make sure
that Firefox is permitted to access the Web.
If your computer or network is protected by a firewall or proxy, make sure
that Firefox is permitted to access the Web.
A possible cause is security software (firewall,anti-virus) 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 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:
See also: