This article explains how to prevent your MacBook from sleeping when the lid is closed.

How to Keep Your MacBook On When Closed

You’ll need to change a few settings to stop your MacBook from going to sleep with the lid closed.

1. Open System Settings or System Preferences from the Apple menu in the top left corner.

2. Choose Lock Screen, then select the menu next to Turn display off on power adapter when inactive, and choose Never.

   If you don’t see that option, go to Battery > Power Adapter instead, then select the slider and move it to Never.

3. Select Battery from the menu, then click Options. Enable the toggle next to Prevent automatic sleeping on power adapter when the display is off.

   In some versions of macOS, this option is in the Power Adapter menu and it’s called Prevent computer from sleeping automatically when the display is off.

4. Plug your MacBook into power.

5. Connect your MacBook to an external monitor using an adapter if necessary.

6. You can now close your MacBook without the external display turning off. Keep in mind that the display on the MacBook itself will turn off, but the external monitor remains active.

Why Does My MacBook Sleep When I Close the Lid?

Your MacBook sleeps when you close the lid for several reasons, depending on whether it’s plugged in. When plugged in, it sleeps to help conserve energy and allow it to charge more quickly, as it uses much less power while asleep. When running on battery power, it sleeps when you close the lid to conserve battery power. Since you typically don’t need to use your MacBook when the lid is closed, the default setting is for the display to turn off and the MacBook to sleep whenever the lid is closed.

The most common reason to want to keep a MacBook from sleeping when the lid is closed is if you’re going to use it with an external monitor and keyboard. Apple makes that reasonably easy if you follow the instructions provided in the previous section.

Can You Keep a MacBook From Sleeping With the Lid Closed Without a Monitor?

Apple offers just one way to keep your MacBook from sleeping with the lid closed: adjust the energy-saver settings, connect the battery charger, and hook up an external monitor.

No option in the battery or energy-saving settings allows a MacBook to stay awake with the lid closed if an external monitor isn’t plugged in. Therefore, you’ll need to install a third-party app, such as Amphetamine, to prevent your MacBook from sleeping without an external monitor.