Easy Tech TutsHow to Fix Slack Notifications Not Working Easily 2026
By Impran M N
Missing an urgent ping because of misconfigured Slack notifications can disrupt your whole workflow. This guide walks through the common causes, from in-app preferences to system-level permissions, and the fixes for each.
01Check your notification preferences
Open Preferences, go to Notifications, and confirm 'Notify me about' is set to All New Messages or Mentions as needed.
02Review your notification schedule
Make sure your set working hours or a lingering Do Not Disturb rule isn't silently blocking alerts.
03Check channel-specific mutes
Verify that the channel you're missing alerts from hasn't been individually muted.
04Confirm system-level permissions
Open your operating system's notification settings and make sure Slack is authorized to show banners, alerts, and sounds.
05Clear the app cache
In the Slack desktop app, click Help, go to Troubleshooting, and select 'Clear Cache and Restart' to resolve delivery glitches.
Frequently asked questions
Why am I not getting notifications even though preferences look correct?
Check your operating system's own notification permissions, since Slack can be blocked at the OS level even with correct in-app settings.
Does clearing the cache delete my messages?
No, clearing the cache only removes locally stored temporary data and doesn't affect your actual message history.
Is there a built-in diagnostic tool for mobile notifications?
Yes, the mobile app includes a 'Troubleshoot Notifications' feature that checks your connection settings automatically.
Could a browser extension be blocking notifications?
Yes, ad blockers or privacy extensions can sometimes interfere with Slack's web notifications.
Watch the full walkthrough
The same steps, demonstrated on screen from start to finish.
