How to Reset Firefox to Default Settings

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If your Firefox browser is unresponsive or experiencing random crashes, it may be necessary to completely reset your internet browser to its default settings.

How to Reset Firefox to its Default State

Click on the Menu option, and select the blue Help icon located at the bottom of the page:

Select the menu option that reads Restart with Add-ons Disabled:

A small menu will appear, asking you if you would like to Start in Safe Mode or Reset Firefox. Click on the Reset Firefox option:

Follow the onscreen procedure to restore your Firefox to its original settings:

For the other versions of Firefox:

Windows XP:

Click on Start, and Run. Enter the following command:
firefox -safe-mode

Windows 7 and Vista:

Click on the Start button, and enter the following command in the Search field:
firefox.exe -safe-mode


Open Terminal and type:

/path/to/firefox/firefox -safe-mode

Mac OS:

Open Terminal and type the below command:

/Applications/ -safe-mode
Jean-François Pillou

Jean-François Pillou - Founder of CCM
Better known as Jeff, Jean-François Pillou is the founder of He is also CEO of CCM Benchmark and digital director at the Figaro Group.

Learn more about the CCM team