What to do if Firefox no longer starts after installing a rogue add-on

If Firefox no longer starts up after you installed an add-on, what you can do is start Firefox in safe mode and just disable that add on.

To do this, open up a console and run the following:

firefox -safe-mode

You’ll see the following dialog box:

Press the Continue in Safe Mode button. Once Firefox has started up, go to the Tools->Add-ons menu and disable the one you just installed. Click the Restart Firefox button, and it should start up fine again.

Author: Musaul Karim

Software Engineer, Hobbyist Photographer, and a bit of a gadget geek.

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