Hi Mary, could you start by checking whether Firefox is in its full screen mode? The F11 function key will switch between full screen and regular views. If that doesn't help, you can turn individual bars on and off using one of these methods: * right-click a blank area of the tab bar * right-click the "+" button on the tab bar * on the classic menu bar (tap Alt to display temporarily): View > Toolbars * "3-bar" menu button > Customize > Show/Hide Toolbars Can you get the missing bar(s) back? Some users report simply exiting out of Firefox and starting it up again can correct missing bar problems, so if other steps don't work, you might want to give that a try.