Disable automatic Formfills in Firefox

Firefox fills out forms automatically be default which is something that not all users want. There is however an easy way to disable that function which has the result that no forms are automatically filled from that moment on. The easiest way to change the setting is to type about:config in the address bar and filter for the name browser.formfill.enable.

The function is active if it is set to true. A double-click changes the setting to false which has the desired effect. Changes take effect immediately.