On your iMac if you are not getting notifications and not getting notifications sound on iMac then you can easily fix this issue of iMac notifications issue on macOS Ventura, MacOS Monterey or any MacOS issue on iMac and turn on notification on iMac. So, let’s dive in deeper.

Fix iMac Not Getting Notifications
Below iMac troubleshooting methods will help you get rid of iMac not getting notification or no notification sound on iMac.
Turn on Notifications on iMac
Once you turn on notifications on your iMac, then your issue of iMac Not getting notification issue will be resolved and you will start receiving notification.
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4) How to Stop macOS Catalina Update Notification on Mac
5) How to Fix Live Text Not Working on MacOS Monterey M1
Reboot your iMac
Once you restart your iMac then your issue of iMac not getting notification issues will be fixed.
Using Activity Monitor
Now, go ahead and restart your iMac and when iMac restarts then the notification center gets restarted automatically and any issue with Notification center not working or no sound or any other issue will be fixed.
Why iMac Not Getting Notifications
If notifications are turned off for specific applications like messages or whatsapp or facetime or any other application are turned off then you won’t receive any notification on iMac and you need to manually turn on.