Troubleshoot Slack notifications

Having trouble with Slack notifications? This article will help you troubleshoot common issues.


An overview of common notification issues


⚠️ Stuck badge notifications

Learn how to troubleshoot.

A ghost or phantom notification that won’t go away.

⚠️ Not receiving notifications

Learn how to troubleshoot.

You’re expecting a notification but nothing comes through.


⚠️ Delayed notifications

Learn how to troubleshoot.

When your notifications show up slower
than expected.

⚠️ No notification sounds

Learn how to troubleshoot.

A notification comes through but you don't hear a sound.


What causes notification issues?

  • Cached data that is bad or corrupted
  • Browser preferences or settings
  • Windows or Mac system settings (such as Do Not Disturb or Focus Assist)
  • Mobile devices or apps that interfere with notification delivery


Stuck badge notifications

Ever had a notification badge but no new activity to see? This is usually related to some bad cached data.

Desktop

iOS

Android

Step 1: Mark everything as read

  1. From the desktop app, open the affected workspace.
  2. Press Shift Esc.


Step 2: Clear your cache

  1. Click Help in your computer's menu bar.
  2. Select Troubleshooting, then Clear Cache and Restart.


Step 3: Send us your logs 

Collect logs from the Slack desktop app and send them to us.

  1. Click Help in your computer's menu bar.
  2. Select Troubleshooting, then Report issue.
  3. Fill out the form and hit Submit.
  4. The logs will automatically be attached.

Step 1: Clear your app cache

  1. Open the Settings app on your iOS device.
  2. Select Slack, then choose Reset Cache on Next Launch.
  3. Reopen Slack.


Step 2: Send us your logs

Collect logs from the Slack app and send them to us.

  1. In the Slack app, swipe left to open the right sidebar.
  2. Tap Settings, then Submit Feedback.
  3. Include a brief summary of the issue(s) and we’ll take a look.

Step 1: Clear your app cache

  1. In the Slack app, tap the  Overflow menu.
  2. Tap Settings, then Advanced.
  3. Choose Reset Cache.


Step 2: Send us your logs

Collect logs from the Slack app and send them to us.

  1. In the Slack app, tap the  Overflow menu.
  2. Tap Settings, then Send feedback.
  3. Include a brief description of the issue(s) and we’ll take a look.


Not receiving notifications

Sometimes your system settings interfere with notification delivery. If you’re not receiving notifications, give these steps a try.

Slack won’t send notifications to your desktop and mobile devices at the same time. Learn more about the timing between desktop to mobile notifications.

Mac

Windows

Browser

iOS

Android

Check your Mac OS notification preferences

  1. Open your computer's System Preferences, then click Notifications.
  2. Select Slack from the list.
  3. Set the Slack alert style to either Banners or Alerts.

Note: If your device is running macOS 10.15, make sure to toggle on Allow Notifications from Slack before the last step.

Check your Mac OS Do Not Disturb settings

  1. Click the   three horizontal lines icon in the upper-right corner of your screen to open the Notification Center for Mac.
  2. Locate Do Not Disturb and make sure it’s toggled Off.

Check your settings for Notifications & Actions

  1. On Windows 10, click the Start menu.
  2. Select Settings, then System.
  3. From the right sidebar, choose Notifications & Actions.
  4. Locate Slack in the list and check if notifications are enabled.


Check your Focus Assist settings

  1. On Windows 10, click the Start menu.
  2. Select Settings, then System.
  3. From the right sidebar, choose Focus Assist.
  4. Select Off to disable the feature. This will allow you to receive notifications.

Note: If notification sounds stop working on Windows 10, check the setting for Windows Quiet Hours. If active, notification sounds for apps are suppressed.

Enable visual effects on Windows Classic Theme

Using the Windows Classic Theme on Windows 7? Slack needs certain visual effects enabled in order to send you notifications. Here’s how to turn them on:
  1. Open the Start Menu.
  2. In the Search bar, type Transparency.
  3. Select Find and fix problems with transparency and other visual effects.
  4. Run the wizard to automatically turn on visual effects.

Remember: You’ll only get notifications for workspaces that you have open in your browser.

Chrome

  1. From the menu, click Preferences.
  2. Click Advanced at the bottom of the page.
  3. Under Privacy and Security, click Content Settings, then select Notifications.
  4. Make sure Ask before sending (recommended) is turned on.


Firefox

  1. From the menu, click Preferences.
  2. Click Privacy & Security, then Settings (across from Notifications).
  3. Make sure your Slack workspace is included in the Notifications Permissions list.


Safari

  1. From the menu, click Preferences.
  2. Under the Websites tab, select Notifications.
  3. Make sure your Slack workspace is allowed to send notifications.

Step 1: Troubleshoot your notifications

  1. In the Slack app, swipe left to open the right sidebar.
  2. Tap Settings, then Notifications.
  3. Tap Troubleshoot Notifications to run the in-app diagnostic test.

When the test finishes, you'll get a report which outlines any settings or issues that need to be addressed.

Tip: Power saving mode or performance optimization apps may also prevent Slack from sending notifications. If using one of these, try disabling it or whitelisting Slack.


Step 2: Send us your logs

Collect logs from the Slack app and send them to us.

  1. In the Slack app, swipe left to open the right sidebar.
  2. Tap Settings, then Submit Feedback.
  3. Include a brief summary of the issue(s) and we’ll take a look.

Note: If the steps below don't help, check out Known issues with Android notifications for more information.

Step 1: Restart your phone

Sometimes notification trouble can be fixed by restarting your device.


Step 2: Troubleshoot your notifications

  1. In the Slack app, tap the  Overflow menu.
  2. Tap Settings.
  3. Under Notifications, tap Settings.
  4. Select Troubleshoot Notifications to run the in-app diagnostic test.

When the test finishes, you'll get a report which outlines any settings or issues that need to be addressed.

Tip: Power saving mode or performance optimization apps may also prevent Slack from sending notifications. If using one of these, try disabling it or whitelisting Slack.


Step 3: Check settings for Google Play services

  1. Open the Settings app on your Android device.
  2. Click Application manager, then locate Google Play Services.
  3. Make sure Show notifications is checked.

Note: Google Play Services is needed to receive notifications on Android. Make sure your device is supported


Step 4: Send us your logs

Collect logs from the Slack app and send them to us.

  1. In the Slack app, tap the  Overflow menu.
  2. Tap Settings, then Send feedback.
  3. Include a brief summary of the issue(s) and we’ll take a look.

Tip: Need help troubleshooting your email notifications? Visit Trouble receiving emails from Slack.


Delayed notifications

Notifications running late? If your notifications are delayed, it may be due to your preference settings.

Windows

iOS

Android

Step 1: Change how Slack sends notifications

  1. From your desktop, click your workspace name in the top left.
  2. Select Preferences.
  3. Under Deliver notifications via, choose Built-in notifications.


Step 2: Send us your logs

If the above step didn't resolve the issue, collect logs from the Slack app and send them to us.

  1. Click Help in your computer's menu bar.
  2. Select Troubleshooting, then Report issue.
  3. Fill out the form and hit Submit.
  4. The logs will automatically be attached.

Step 1: Check your mobile notification settings

  1. In the Slack app, swipe left to open the right sidebar.
  2. Tap Settings, then Notifications.
  3. Tap Notify Me on Mobile, then choose As quickly as possible.


Step 2: Send us your logs

Collect logs from the Slack app and send them to us.

  1. In the Slack app, swipe left to open the right sidebar.
  2. Tap Settings, then Submit Feedback.
  3. Include a brief summary of the issue(s) and we’ll take a look.

Step 1: Check your mobile notification settings

  1. In the Slack app, tap the  Overflow menu.
  2. Tap Settings.
  3. Under Notifications, tap Settings.
  4. Tap Notify Me on Mobile, then choose As quickly as possible.


Step 2: Send us your logs

Collect logs from the Slack app and send them to us.

  1. In the Slack app, tap the  Overflow menu.
  2. Tap Settings, then Send feedback.
  3. Include a brief summary of the issue(s) and we’ll take a look.

Note: Mac users don’t typically experience this particular issue. But if you are having trouble, we’re here to help.


No notification sounds

Not hearing your notification sound when you receive a notification? This may be a result of your preference settings.

Mac

Windows

Step 1: Check if sounds are enabled

  1. On your desktop, open your System Preferences.
  2. Click on Notifications, then look for Slack in the list.
  3. Make sure that sounds enabled.


Step 2: Check your audio output settings

  1. On your desktop, open your System Preferences.
  2. Click on Sound, then select Sound Effects.
  3. Make sure the Alert Volume is turned up.
  4. Check what option is selected for Play sound effects through.


Step 3: Send a test notification

  1. From your desktop, click your workspace name in the top left.
  2. Select Preferences.
  3. Under Sound and appearance, click Show me an example notification.

Step 1: Check Windows notification settings

  1. On Windows 10, click the Start menu.
  2. Select Settings, then System.
  3. From the right sidebar, choose Notifications & Actions.
  4. Locate Slack in the list and check if Play a sound is enabled.


Step 2: Send us your logs

If the above step didn't resolve the issue, collect logs from the Slack app and send them to us.

  1. Click Help in your computer's menu bar.
  2. Select Troubleshooting, then Report issue.
  3. Fill out the form and hit Submit.
  4. The logs will automatically be attached.

Note: External monitors can cause issues with notification sounds. Try disconnecting your monitor and see if the problem persists.