From now on, Firefox no longer stores or offers new autocomplete suggestions.On the next screen, under Search Suggestions, uncheck the box next to Provide search suggestions.Scroll down to the Address bar section, uncheck all the boxes, and then click Change preferences for search engine suggestions.In the window that appears, click the Privacy & Security option in the left navigation pane.Select Settings from the drop-down menu.Click the menu icon in the upper-right corner of the browser window.To enable or disable autocomplete in Firefox, follow these steps. To re-enable autocomplete, toggle the switch to the on position. From now on, Chrome no longer stores or offers new autocomplete suggestions.Under the Other Google services section, toggle the switch next to Autocomplete searches and URLs to the off position.In the middle of the browser window, under the You and Google section, click Sync and Google services.