How to Auto Lock Screen on macOS 13 Ventura

Configuring your Mac to lock its screen automatically after a period of inactivity is an essential security measure that protects your personal data from unauthorized access. In macOS 13 Ventura, Apple replaced the traditional System Preferences with the redesigned System Settings app, slightly changing the location of display sleep and screen lock options. This guide provides the direct steps required to set an idle timer for turning off your display and requiring a password immediately upon waking.

Step 1: Set the Password Requirement

To ensure the Mac actually locks when it goes idle, you must require a password as soon as the display turns off or the screen saver begins.

  1. Click the Apple menu () in the top-left corner of the screen and select System Settings.
  2. Scroll down the left sidebar and select Lock Screen.
  3. Locate the setting labeled Require password after display turns off or screen saver begins.
  4. Click the drop-down menu next to it and select Immediately.

Step 2: Set the Inactivity Timer

Once the password prompt is enabled, set the duration of inactivity that triggers the lock.

  1. In the same Lock Screen settings menu, locate the display turn-off options:
    • Turn display off on battery when inactive (for MacBooks)
    • Turn display off on power adapter when inactive (or Turn display off when inactive on desktop Macs)
  2. Click the drop-down menu next to each option and choose your preferred timeframe (such as 2, 5, or 10 minutes).

Optional: Use a Screen Saver Before Locking

If you prefer a visual transition before the display turns completely off:

  1. Under the Lock Screen menu, find Start Screen Saver when inactive.
  2. Choose a duration shorter than or equal to the time set for turning off the display.

Once these configurations are set, close the System Settings window. Your Mac will now automatically lock its screen after your chosen duration of inactivity.