
To find a specific configuration variable, enter all or part of the configuration string in the Filter field or scroll through the list. You can search for a specific configuration variable by using the Filter field. You should have a solid grasp of the configuration variables before making any changes to avoid unwanted browser behavior. From here, you have access to all Firefox configuration variables. You will receive the following warning:Ĭlick I'll be careful, I promise! You're now on the advanced configuration page. You can access the in your browser window by entering about:config into the Firefox window.


To make Firefox your default web browser, select Tools > Options Edit > Preferences Firefox > Preferences and click the Check Now button in the Advanced panel.
