Mac Hot Corners: Setup & Use Guide

Mac Hot Corners let you trigger actions like Mission Control, Launchpad, or locking the screen just by moving your cursor to a corner of the display. This guide walks you through setting them up, customizing them, and avoiding common pitfalls.

What You’ll Need

• A Mac running macOS (any recent version, from Catalina to Sonoma and later).
• An active user account with administrator privileges (to change system settings).
• A mouse, trackpad, or other pointing device.

Step-by-Step

1. Open System Settings (or System Preferences). Click the Apple menu (top-left) and select System Settings (macOS Ventura and later) or System Preferences (macOS Monterey and earlier).
2. Navigate to Desktop & Dock. In System Settings, click Desktop & Dock in the sidebar. In System Preferences, click Mission Control.
3. Find Hot Corners. Scroll down in the Desktop & Dock pane until you see Hot Corners… (a small button at the bottom). In Mission Control, it’s also at the bottom. Click it.
4. Choose a corner action. A pop-up shows four drop-down menus, one for each corner of the screen. Click the menu for the corner you want to assign (e.g., Top Left).
5. Select the action. From the drop-down, choose what happens when you move the cursor to that corner. Options include:
   • Mission Control: Shows all open windows and desktops.
   • Launchpad: Opens the app grid.
   • Desktop: Moves windows aside to show the desktop.
   • Notification Center: Opens the notifications sidebar.
   • Lock Screen: Locks the Mac immediately.
   • Put Display to Sleep: Turns off the screen.
   • Quick Note: Creates a new note (macOS Monterey and later).
   • Start Screen Saver: Launches the screen saver.
   • Disable Screen Saver: Prevents it from starting while the cursor is in that corner.
6. Set additional corners (optional). Repeat step 4–5 for other corners. You can assign up to four different actions.
7. Add modifiers (optional). Hold down Command, Option, Control, or Shift (or a combination) while clicking a drop-down menu to require that key combo along with the cursor movement. This prevents accidental triggers.
8. Click OK. The settings save immediately. Test by moving your cursor to the assigned corner.

Common Mistakes

• Accidental triggers: The most common issue is activating an action when you didn’t intend to. This happens when a corner is too easy to hit while moving across the screen.
• Ignoring modifier keys: Many users don’t realize you can require a modifier key, which drastically reduces accidental activations.
• Forgetting to check the corner: If you assign an action to the top-left, but your menu bar is there, it still works—but you might accidentally open menus. Choose corners that don’t interfere with your workflow.
• Not testing after setup: Sometimes the action doesn’t work because the corner is already used by another app (like a full-screen app’s edge). Always test after setting.

Tips

• Use modifiers for safety: For actions like Lock Screen or Sleep, add a modifier (e.g., Command+Option) to avoid locking your Mac by accident.
• Pick corners that match your habits: If you often glance at the top-right for notifications, assign that corner to Notification Center. If you need quick desktop access, bottom-left is a common choice.
• Combine with keyboard shortcuts: Hot corners are great for mouse-centric tasks, but you can also use keyboard shortcuts (like Control+Up for Mission Control) as a backup.
• Use Quick Note for productivity: Assign a corner to Quick Note to jot down ideas instantly without opening the app.
• Change corners per display: If you use multiple monitors, each display has its own set of Hot Corners. Configure them separately by opening the settings while the pointer is on that display.

Troubleshooting

Hot Corners not working at all:

1. Ensure you’re in the correct pane: System Settings → Desktop & Dock → Hot Corners. If you’re in a different settings section, it may not apply.
2. Check if the corner is already assigned to “-” (no action). If so, select an action.
3. Restart your Mac. Sometimes the settings don’t take effect until a reboot.
4. Try toggling Hot Corners off and on by setting all to “-”, clicking OK, then reopening and assigning again.

Hot Corners trigger accidentally:

• Add a modifier key (as described in Step 7).
• Choose a different corner that you don’t cross as often.
• If you have a large screen, corners are easier to hit—consider using only one or two.

Hot Corners work but action doesn’t do what I expect:

• For “Lock Screen,” it may require a password immediately—that’s normal.
• For “Put Display to Sleep,” the screen goes black, but the Mac stays on. Press any key to wake.
• If you chose “Start Screen Saver” and it doesn’t appear, check your Screen Saver settings (System Settings → Screen Saver) to ensure one is selected.

Hot Corners don’t work in full-screen apps:

• This is a known limitation. Some full-screen apps capture the cursor, so Hot Corners may not respond. Move the cursor to the corner and hold for a second, or exit full-screen.

Frequently Asked Questions

Can I have different Hot Corners for each display?
Yes. On a multi-monitor setup, each display has its own set of Hot Corners. Open the settings while the pointer is on the display you want to configure, and assign actions separately.

How do I disable Hot Corners completely?
Open Hot Corners settings and set every corner to “-” (no action). Click OK.

Can I use Hot Corners with only a keyboard?
No, Hot Corners require a mouse or trackpad. However, you can use keyboard shortcuts for similar actions (e.g., Control+Up for Mission Control).

Why does my cursor get stuck in a corner?
That’s likely because the Hot Corner action triggers and the cursor sits there. Move the cursor away quickly, or add a modifier key to prevent it from triggering too easily.

Do Hot Corners work on macOS Sequoia?
Yes, Hot Corners are still available in macOS Sequoia, located in System Settings → Desktop & Dock → Hot Corners.

Can I assign different actions to the same corner with a modifier?
No, each corner can only have one action at a time. However, you can use modifiers to require a key press, but the action itself is fixed.

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