macOS Notification Center Not Working Fix

What Does This Error Mean?

When macOS Notification Center is not working, notifications from apps like Mail, Messages, Calendar, and third-party apps stop appearing. The Notification Center panel may also fail to open when you click the date and time in the menu bar. This is usually caused by a corrupted notification database, an agent process that has crashed, or Do Not Disturb (Focus mode) being enabled.

Affected Models

MacBook Air
MacBook Pro
iMac
Mac Mini
Mac Pro
Mac Studio

Common Causes

Focus or Do Not Disturb mode is enabled and silencing all notifications
The NotificationCenter background process has crashed or become unresponsive
The notification database on the Mac is corrupted
Individual app notification permissions have been disabled in System Settings
A macOS update reset notification permissions or caused a bug in the notification system

How to Fix It

Check that Focus/Do Not Disturb is off. Click the date and time in the top right of the menu bar. Look for a Focus mode indicator. If Do Not Disturb or any Focus mode is enabled, click it to turn it off.

Focus mode is the single most common reason notifications suddenly stop. It is easy to enable accidentally.
Check app notification settings. Go to System Settings > Notifications. Click the app whose notifications are missing. Make sure 'Allow Notifications' is turned on and the alert style is not set to 'None.'

After a macOS update, app notification permissions sometimes get reset to off. Check each important app individually.
Restart the NotificationCenter process. Open Terminal (Applications > Utilities > Terminal) and type: killall NotificationCenter — press Enter. The process restarts automatically.

This forces the notification agent to restart without rebooting the Mac. Notifications usually start working immediately.
Clear the notification database. In Terminal, type: rm -rf ~/Library/Application\ Support/NotificationCenter/ — press Enter, then restart your Mac.

This deletes the notification history and database. It rebuilds automatically after restart. You will lose your notification history but the system will function correctly.
Restart your Mac if notifications are still not appearing. Apple menu > Restart. Many notification issues resolve after a clean reboot.

If the problem started after installing a new app, try uninstalling that app — some apps interfere with the notification system.

When to Call a Professional

Notification issues are almost always fixable without professional help. If notifications never work after reinstalling macOS, contact Apple Support.

Frequently Asked Questions

Why do notifications appear sometimes but not always?

Intermittent notification delivery is usually caused by an app that is not running in the background. macOS can stop background apps to save power, which means those apps cannot receive or deliver notifications until you open them again. To fix this, open the app and leave it running, or check if the app has a background refresh setting in its own preferences.

My notifications show in Notification Center but no banner appears. Why?

This means notifications are being delivered but the alert style is set to 'Alerts (delivered quietly)' or 'None' instead of 'Banners' or 'Alerts.' Go to System Settings > Notifications, find the app, and change the alert style to 'Banners' (which disappear automatically) or 'Alerts' (which stay until dismissed).

After a macOS update, all my notification settings were reset. Is that normal?

It can happen, especially after a major macOS version update. Apple sometimes resets privacy and notification permissions during significant updates as a security measure. You will need to go through System Settings > Notifications and re-enable notifications for each app. This is a one-time re-setup, not an ongoing problem.