Hi blondiejune, sorry to hear your Calendar notifications have stopped — this is a common issue that can happen after macOS updates. Even if your notification settings look correct, there are a few deeper places to check:
1. Check Notification Center settings specifically for Calendar:
- Go to System Settings > Notifications > Calendar
- Make sure "Allow Notifications" is ON
- Set the Alert Style to "Alerts" (not "None" or "Banners" that might be easy to miss)
- Also make sure "Play sound for notifications" and "Show in Notification Center" are checked
2. Check Do Not Focus/Focus Mode:
- Make sure Focus Mode is not silencing Calendar alerts
- Go to System Settings > Focus and check if any active Focus is filtering Calendar notifications
3. Check Calendar alert settings:
- Open the Calendar app > Calendar menu > Settings > Alerts
- Make sure default alerts are set for your events (e.g., "15 minutes before" for events)
4. Restart the notification system:
- Open Terminal and run: killall NotificationCenter
- This restarts the notification service without rebooting
5. Check event alerts individually:
- Open a specific event in Calendar and verify it has an alert set (click the event > Edit > Alert)
- Sometimes events lose their alerts after iCloud syncs
6. Reset Calendar permissions:
- Go to System Settings > Privacy & Security > Notifications
- Find Calendar and toggle it off, then back on
7. Reboot your iMac:
- A simple restart resolves notification system issues more often than expected
Hope this gets your reminders working again!