The bar at the bottom of a Mac is the Dock: how to bring it back

The strip of app icons along the bottom of a Mac screen is the Dock. The strip along the top, with the Apple logo, the app menus and the clock, is the menu bar. They are two separate things with two separate sets of settings, and searching for a missing bottom menu bar turns up answers about the wrong one often enough to waste an afternoon.

Getting the name right is the whole first step. Once it is clear that the Dock is what went missing, the list of things that can cause it is short, and every one of them is reversible in under a minute.

Which bar is actually missing

	Menu bar	Dock
Where it sits	Top edge, full width	Bottom edge by default, movable to left or right
What it holds	Apple menu, app menus, clock, status icons	App icons, folders, Trash, minimised windows
Setting lives in	System Settings, Control Center	System Settings, Desktop & Dock
Hiding behaviour	Four way choice including Always and Never	A single automatic hide toggle

If the clock and the File and Edit menus are still at the top, the menu bar is fine and the Dock is the problem. If the top of the screen is bare instead, that is a different setting entirely and lives under Control Center.

The keystroke to try first

Press Option-Command-D. Apple documents it as showing or hiding the Dock, and on a keyboard with a function row, Fn-A does the same thing.

If the Dock slides back into view, the answer is already known: automatic hiding was switched on, almost certainly by that same keystroke being hit by accident. Option-Command-D sits close enough to common shortcuts that it gets triggered while reaching for something else, which is why this is the single most common cause of a Dock that vanished without warning.

Pressing it again hides the Dock once more, so the keystroke is a toggle rather than a fix. Making the change stick means turning the setting off properly.

Turning automatic hiding off for good

There are two routes to the same switch.

The first is System Settings. Open it, choose Desktop & Dock in the sidebar, and look for Automatically hide and show the Dock near the top of the Dock section. Switching it off keeps the Dock on screen permanently.

The second is faster if the Dock is currently visible. Control-click the thin divider line that separates the app icons from the Downloads folder and the Trash. The menu that appears includes Turn Hiding Off, along with Turn Magnification On, Position on Screen and Dock Settings. That menu is the quickest route to most Dock behaviour and a lot of people never discover it.

With hiding on, the Dock still comes back whenever the pointer is pushed against the edge it lives on. If the pointer has to be pressed hard against the bottom of the screen and nothing happens, the Dock is not hidden. It has moved.

When the Dock has moved rather than hidden

The Dock can live on the bottom, the left edge or the right edge of the screen. A Dock on the left edge of a wide display is easy to miss entirely, especially with a window covering most of the screen, and the complaint that the bottom bar disappeared is sometimes a Dock that is standing on its side twenty centimetres away.

The setting is Position on screen in Desktop & Dock, with three choices: Left, Bottom and Right. The same three appear in the Control-click menu under Position on Screen.

Two related settings are worth checking while that pane is open. Size governs how large the icons are, and a Dock dragged to its smallest setting can be genuinely hard to notice. Magnification enlarges icons as the pointer passes over them, which is the usual way people discover a Dock that had shrunk to almost nothing.

When the app is simply full screen

An app taken full screen hides both the Dock and the menu bar by design. Nothing is broken, and no setting has changed.

The tell is that the window has no traffic light buttons in its corner and no visible title bar. Pressing Control-Command-F leaves full screen, which Apple lists as using or stopping using the app in full screen. Moving the pointer to the bottom edge of the screen brings the Dock back temporarily without leaving full screen, which is enough for clicking one icon.

This catches people out most often with video players and presentation software, which enter full screen on their own when playback starts and stay there after it ends.

When more than one display is connected

The Dock appears on one display at a time. Which display counts as the main one is set in System Settings under Displays, in the arrangement layout where the small white strip representing the menu bar can be dragged from one screen to another.

The practical symptom is a Dock that seems to have gone missing after plugging in an external monitor, or after waking a Mac whose external display came back in a different order. Checking the other screen before changing any setting saves a lot of effort. If the Dock is sitting at the bottom of the second display, nothing needs fixing beyond deciding which screen should be the main one.

When the Dock is visible but wrong

A few faults look like a missing Dock without being one.

A question mark where an icon used to be

The Dock holds pointers to apps rather than the apps themselves. When an app is deleted or moved, the pointer has nothing to aim at and the Dock shows a question mark in its place. Apple keeps a dedicated page about this. The fix is to drag the question mark icon off the Dock and release it, which removes the dead entry without affecting anything else.

Icons that keep appearing without being added

Desktop & Dock has a switch called Show suggested and recent apps in Dock. With it on, recently used apps appear at the right end of the Dock and disappear again later, which reads as a Dock that keeps rearranging itself. Turning it off makes the contents stable.

A Dock that is behaving strangely in several ways at once

Resetting it is a single command, at the cost of losing the current arrangement of icons.

defaults delete com.apple.dock
killall Dock

The Dock restarts immediately with Apple's default set of icons and default settings. Anything that had been dragged into it will need dragging back, so this is a last step rather than a first one.

Settings worth changing while the pane is open

A Dock that went missing is usually a Dock that has never been configured, and the rest of the pane holds four settings that change how much room it takes and how readable it is.

Minimize windows into application icon decides where a minimised window goes. With it off, each minimised window gets its own thumbnail at the right end of the Dock, and a morning of minimising turns the Dock into a row of tiny unreadable images. With it on, the window folds into the icon of the app it belongs to, and the Dock stays the same length all day. For anyone who minimises frequently, this is the single largest change available in the pane.

Minimised window animation offers the Genie Effect and the Scale Effect. Genie is the sweeping curve macOS has used since the beginning. Scale is a straight shrink and finishes noticeably faster, which is worth having on any Mac where the animation feels sluggish.

Show indicators for open applications draws a small dot under any app that is running. Switching it off makes the Dock tidier at the cost of no longer being able to tell at a glance what is open, which is the same trade being made everywhere else in this article: appearance against information.

Show suggested and recent apps in Dock, mentioned above as a cause of a shifting Dock, is also the setting that keeps the Dock from growing indefinitely on a Mac where lots of different apps get opened.

Two habits go with those settings. Control-clicking any app icon in the Dock opens a menu with an Options submenu, and Keep in Dock there is how an app stops disappearing when it quits. Dragging a folder into the right hand section of the Dock turns it into a stack that fans out on click, which covers most of what people want from a Dock full of aliases without adding a single extra icon.

Symptoms and where to look

Symptom	Most likely cause	Where to fix it
Dock returns when the pointer touches the bottom edge	Automatic hiding is on	Desktop & Dock, or Turn Hiding Off
Nothing at the bottom, nothing at the edges	Dock moved to left or right	Position on screen
Missing only in one app	That app is full screen	Control-Command-F
Missing after connecting a monitor	Dock is on the other display	Displays, arrangement layout
Present but showing a question mark	App was moved or deleted	Drag the icon off the Dock
Present but the contents keep changing	Suggested and recent apps	Desktop & Dock

Working down that list in order settles almost every case without touching Terminal at all.

The bar that really does empty itself

Worth knowing, because it is the same complaint arriving from the opposite direction: the menu bar at the top genuinely does lose items on its own, and no setting was changed when it happens.

Status icons are drawn from the right edge inwards while the app menus grow from the left. Both share one strip of fixed width. When they meet, macOS drops status items to make room, silently, and on a MacBook the notch reduces the space available before the collision happens. Switching to an app with long menu names can push two or three icons out of view, and switching away brings them back. Nothing is broken and nothing can be recovered by restarting.

That is a capacity problem rather than a settings problem, which is why it is solved by reducing what the bar is asked to hold. System Settings can remove system modules individually under Control Center, and a menu bar organizer collapses the rest behind a divider so the remaining space belongs to the icons that matter. The features list describes what that looks like, and the comparison page sets the available tools against each other.

What to change first

Press Option-Command-D once. If the Dock comes back, open Desktop & Dock and switch off automatic hiding so it stays. If icons at the top of the screen are the ones going missing instead, that is a width problem rather than a hiding problem, and Koffret is built for it.