Force Quit Not Working on Mac? How to Kill Any App

You pressed ⌥⌘⎋, nothing happened. Or the Force Quit window opened, you clicked the app, and it just sat there spinning. Frustrating, but fixable.

Below are the methods that actually kill a stuck app, ordered from easiest to most forceful. Start at the top and only move down if the app keeps refusing to die. A hard restart is the last resort, not the first.

First, why Force Quit didn't work

The standard shortcut is ⌥⌘⎋ (Option-Command-Escape). When it does nothing or the app refuses to quit, it's usually one of these:

• The app isn't fully hung. It's busy (saving, syncing, rendering) and macOS is waiting for it to respond. The Force Quit window can't interrupt that cleanly.
• A modal dialog is blocking it. An unsaved-changes or permission sheet is open behind the window, so the app won't let go until you answer it.
• Your keyboard input isn't reaching the system. A frozen full-screen app, a stuck modifier key, or a misbehaving input source can swallow ⌥⌘⎋.
• The process is truly wedged in the kernel (often waiting on disk or network I/O). A normal force quit asks nicely first. A wedged process never answers.

If the keyboard shortcut itself does nothing, try opening the window from the menu instead: click the Apple menu () in the top-left corner and choose Force Quit. Same window, no shortcut required.

Method 1: Try the Force Quit window again (the right way)

Reopen it with ⌥⌘⎋ or from the Apple menu > Force Quit. Then:

1. Select the stuck app. If it's hung, macOS labels it (not responding) in red.
2. Click Force Quit, then confirm in the dialog.
3. If it doesn't die on the first try, click it again. macOS sends a stronger signal the second time.

You can also force quit from the Dock: right-click (or Control-click) the app's Dock icon, then hold down the ⌥ (Option) key. "Quit" changes to Force Quit. Click it.

Still spinning? The app isn't going to answer politely. Move on to Activity Monitor.

Method 2: Activity Monitor (works when the window can't)

Activity Monitor talks to the process directly, so it can kill apps the Force Quit window gives up on.

1. Open Activity Monitor from Spotlight (⌘ + Space, type "Activity Monitor") or in Applications > Utilities.
2. Find the stuck app in the list. Type its name in the search box (top-right) to find it fast. Processes that are hung show up dimmed or marked not responding.
3. Select it and click the X (Stop) button in the toolbar.
4. Choose Force Quit in the dialog. ("Quit" is the polite version; "Force Quit" is the one that doesn't take no for an answer.)

If even Activity Monitor's Force Quit fails, the process is wedged hard. Time for the Terminal.

Method 3: Terminal — kill, killall, and kill -9

Terminal sends signals straight to the process and is the most reliable way to take something down. Open Terminal from Applications > Utilities (or via Spotlight).

Kill by name (easiest if you know the app):

1. Type killall "Safari" and press Return. Use the app's process name exactly, in quotes if it has spaces.
2. If it ignores that, force it: killall -9 "Safari".

Kill by process ID (when the name is ambiguous):

1. Find the PID: pgrep -fl Safari (or watch the PID column in Activity Monitor).
2. Send the polite signal first: kill 12345 (replace 12345 with the real PID).
3. If it won't budge, the nuclear option: kill -9 12345.

What's the difference? Plain kill sends SIGTERM, which asks the app to shut down cleanly. kill -9 sends SIGKILL, which the kernel enforces immediately. The app gets no chance to save or clean up, so you lose unsaved work, but almost nothing survives SIGKILL.

Method 4: sudo kill (for processes you don't own)

If Terminal answers with Operation not permitted or No such process when you know it's running, the process probably belongs to another user or to the system. Run the command with sudo:

1. sudo kill -9 12345 and press Return.
2. Enter your admin password (the cursor won't move as you type, that's normal) and press Return.

One firm warning: do not kill -9 system processes you don't recognize. Killing things like WindowServer, loginwindow, or kernel_task will log you out or crash the machine. Stick to the app you're actually trying to close.

What to do when the whole Mac is frozen

If the cursor won't move and nothing responds at all, the problem is bigger than one app. Work through these in order before you pull the plug:

1. Wait 30–60 seconds. A beachball often clears once a stuck disk or network operation times out. Give it a moment.
2. Try the keyboard. Even with a frozen screen, ⌥⌘⎋ sometimes still opens Force Quit. Worth a shot.
3. Wake the display. Press a key or click. Sometimes only the screen slept and the Mac is fine.
4. Last resort — hard restart. Hold the power button for about 10 seconds until the Mac shuts off, then press it again to restart. On a Mac without a separate power button, hold Touch ID / the power key.

A hard restart is last for a reason: it cuts power mid-write, which risks unsaved work and, rarely, file corruption. Use it only when nothing else responds.

The fastest way to kill an app: MEGAKILL

The methods above all work, but they take steps: open a window, hunt through a list, type a command. If you force quit apps often, there's a quicker route. MEGAKILL is a tiny macOS menu-bar app that lets you force quit anything by shooting it. Hold a shortcut (⌥⌘ by default), your cursor turns into a DOOM-style shotgun, and you click the app's Dock icon or its window. It's force-quit instantly, no Activity Monitor, no Terminal. It uses the same forceful kill macOS does under the hood, and it protects Finder, the Dock, and other system processes so you can't shoot yourself in the foot. Free for your first 100 kills.