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Reset Firefox preferences to troubleshoot and fix problems
Reset Firefox – easily fix most problems | Mozilla Support
Refresh Firefox - reset add-ons and settings | Firefox Help
Firefox options, preferences and settings | Firefox Help - Mozilla …
Configuration Editor for Firefox | Firefox Help - Mozilla Support
i want to reset my browser to default settings which should be like …
Change your default search settings in Firefox | Firefox Help
Fix printing problems in Firefox | Firefox Help - Mozilla Support
How to manage your camera and microphone permissions with …
Can FireFox be uninstalled and reinstalled without losing settings ...