I've been using firefox as my default brower for a year and all of a sudden when I click on it , it won't open.
Google chrome will open as will internet explorer but not firefox.
All Replies (2)
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: