Hi, open the 3-bar menu > Customize, and if you can see it, simply drag it to the toolbar, then Exit Customize to save. If it isn't there, try clicking on Restore Defaults. More here - [[Customize Firefox controls, buttons and toolbars]]. Note: If it won't stay on the toolbar and you have other buttons there, try temporarily dragging them to the 3-bar menu, then see if you can drag the search bar into place. You can now drag any other buttons back to their original locations. ''If your question is resolved by this or another answer, please take a minute to let us know. Thank you!''