If notifications on macOS Tahoe are late, silent or missing, check Focus and the individual app’s notification permission before reinstalling the app. macOS can allow an app to run normally while hiding its alerts because a Focus is active, notifications are disabled for that app, the alert is allowed only in Notification Center, or screen/sleep settings are suppressing when it appears.
The fastest diagnosis is to determine whether notifications are missing from one app or from the entire Mac.
1. First decide: is the problem one app or everything?
Send yourself a controlled test from several sources:
- Messages or Mail;
- Calendar/Reminders;
- the problem app;
- a website notification if you use one.
If only one app fails, focus on that app’s notification settings, login/account state and background behavior. If every app is silent, Focus and system-level Notification settings are more likely.
2. Check Focus in Control Center
Focus can silence all notifications or allow only selected people/apps. Open Control Center and look at Focus. Turn the active Focus off temporarily and repeat the test.
If notifications immediately return, open System Settings > Focus and inspect:
- Allowed People;
- Allowed Apps;
- Time Sensitive Notifications;
- scheduled activation by time, location or app;
- Focus filters;
- Share Across Devices.
A Focus can switch on automatically, which explains the common symptom “notifications work in the morning but disappear every afternoon.”
3. Inspect the app in System Settings > Notifications
Open System Settings > Notifications, choose the affected app and verify Allow notifications is enabled.
Then inspect how the alerts are displayed. macOS Tahoe can place notifications on the Desktop, in Notification Center and on the Lock Screen depending on the selected options. An app can technically be allowed to notify while producing no obvious banner if the visible alert locations are restricted.
Check:
- Allow notifications;
- alert style and display locations;
- sounds;
- badges;
- Show previews;
- Time Sensitive alerts, if the app offers them;
- Critical alerts for apps that legitimately support them.
4. Missing notifications after sleep may be a display policy, not a delivery failure
macOS has system settings controlling whether notifications are shown when:
- the display is sleeping;
- the screen is locked;
- the Mac is mirroring or sharing its display.
If you wake the Mac and only then see a stack of old alerts, review these options under the Notification Center section of System Settings > Notifications.
For a work Mac used for presentations, you may intentionally suppress alerts while screen sharing. That setting can be easy to forget later.
5. Focus may be coming from your iPhone or iPad
When Share Across Devices is enabled, a Focus turned on from another Apple device signed in to the same Apple Account can affect the Mac too. This creates a confusing pattern: nothing changed on the Mac, yet notifications stopped.
As a test:
- open System Settings > Focus;
- check Share Across Devices;
- look at Focus status on your iPhone/iPad;
- turn the Focus off and retest.
If that solves the issue, decide whether you want shared Focus behavior or separate device schedules.
6. If the app receives messages only when you open it, investigate background delivery
This symptom is different from a hidden banner. The notification is not merely invisible; the app seems to learn about new data only after launch.
Check:
- the app is still signed in;
- the account is not paused or offline;
- the Mac has a stable network connection;
- a VPN/firewall is not blocking the service;
- the app has not been force-quit for long periods;
- the app’s own settings still enable notifications;
- the service itself is not having an outage.
For Mail, messaging and collaboration apps, there can be separate in-app notification controls in addition to macOS permissions. Match both layers.
7. Notification summaries and Reduce Interruptions can change what feels “late”
On supported Macs with Apple Intelligence enabled, macOS can summarize notifications and offer a Reduce Interruptions Focus. These features are designed to reduce noise, but they change presentation and prioritization.
If you are troubleshooting a missing urgent notification, temporarily simplify the setup:
- turn off the active Focus;
- disable notification summaries for the test;
- allow the affected app directly;
- send a new notification and observe whether it appears immediately.
Once basic delivery works, re-enable features one at a time. This tells you which layer changes the behavior.
8. Website notifications in Safari are separate from app notifications
If Slack, a news site or another web service notifies you through Safari rather than a native app, inspect both Safari’s website permission and macOS Notifications. A website can be denied at the browser layer even when Safari itself is allowed to show notifications.
If you have other Safari problems, the separate guide Safari Downloads Stuck or Failing on Mac? covers download-specific troubleshooting.
9. When should you reset notification permissions?
Only after you have proved that ordinary settings are correct. Reinstalling an app or resetting privacy databases can create new prompts and remove useful preferences without addressing a Focus schedule or account problem.
Before a reset:
- take screenshots of current notification settings;
- quit and reopen the app;
- restart the Mac;
- install current app and macOS updates;
- test in a new macOS user account if the problem is severe and isolated to one profile.
A new-user test is valuable because it separates system-wide behavior from corrupted user preferences without erasing your main account.
Quick diagnosis table
| Symptom | First place to check |
|---|---|
| All notifications silent | Control Center > Focus |
| One app silent | System Settings > Notifications > app |
| Alerts appear only after unlocking | Notification Center sleep/lock options |
| Mac silences when iPhone enters Focus | Share Across Devices |
| App updates only after launch | account, network and background delivery |
| Web alerts missing | Safari website notification permission + macOS |
FAQ
Why do notifications show in Notification Center but not as banners?
The app’s alert display options may allow Notification Center without a Desktop alert. Review its individual settings.
Can Focus turn on automatically?
Yes. Focus can be scheduled by time, location or app and can also sync across Apple devices.
Why do notifications arrive when I open the app?
That points to a background/account/network issue rather than only a hidden banner. Check sign-in, connectivity, the app’s own settings and service status.
Does Reduce Interruptions delete notifications?
No. It changes which notifications are allowed to interrupt you while that Focus is active. Review the Focus rules if important alerts are being silenced.