macOS won’t update

Try these steps in order. Stop if a step does not apply to your device or could risk important data.

1. Restart the Mac and try again.
2. Make sure the Mac has enough free storage.
3. Use a stable Wi-Fi connection and connect the charger.
4. Open System Settings > General > Software Update.
5. Try Safe Mode if the update repeatedly fails.

Back up important files before repairs that may affect storage or system settings.