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Slack Mac App Not Working

  • Download Slack for free for mobile devices and desktop. Keep up with the conversation with our apps for iOS, Android, Mac, Windows and Linux.
  • Stuck badge notifications Step 1: Mark everything as read Step 2: Clear your cache Step 3: Send us your logs.
  • Slack would sometimes crash when the user right-clicked to see the context menu. In context, that was unhelpful. So it no longer does that. When maximized, the app had developed a bit of a distracting flicker.
  • Open the Slack app. From your computer’s top menu bar, click Slack. Select About Slack. You’ll see the App Store mentioned in the pop-up window if that’s the version you’re using.
  • Sep 11, 2015  Slack.app for Mac would not open and would hang when trying to load a Team. I searched the Internet and then looked for the files that held the Slack Settings myself in all the usual places (/Library/Preferences, /Library/Application Support, etc.).

1 day ago  Below are seven Slack functions you need to use to master working remotely. Turn off notifications with “Do Not Disturb” One challenge of working from home is the pressure to always be “on.” Team chat apps like Slack only intensify that, but here’s the truth: no one’s actually expecting you to always be available. Slack brings team communication and collaboration into one place so you can get more work done, whether you belong to a large enterprise or a small business. Check off your to-do list and move your projects forward by bringing the right people, conversations, tools, and information you need together.

Walk into any modern office today and you’ll inevitably realize how deeply Slack has infiltrated our working lives. What used to be a swarm of internal emails has now turned into hundreds or even thousands of instant messages every day. By now we almost involuntarily keep the Slack app open on our screens at all times.

No wonder then that for most of us, Slack not only never reaches its full performance potential, but can actually slow down our machines. Running the app continuously, in some cases, results in it devouring nearly 4GB of RAM. There should be a better option.

How to speed up Slack on Mac?

Slack’s principal weakness lies in its strength. Impressively, the app is able to run on iPhone, Android, Windows Phone, Linux, Windows, and Mac, as well as all major browsers for the web version. To optimally support this large codebase, Slack has opted to build what’s called progressive apps over native ones. What progressive means is that the app on your device is essentially a shell for the web app, which requires continuous internet connectivity to function.

The culprit then for Slack slowness is the combination of the app demanding to be online and transferring lots of data in the form of messages and updates. But fear not, there are a few tricks you can use to speed up Slack on your Mac.

1. Switch to faster Wi-Fi

That simple. If the app you want to run requires continuous internet connection, then upgrading your Wi-Fi will ensure that there are fewer offline moments. Higher download speeds from your ISP diminish the chance of lags. As a general rule of thumb, always get the fastest internet available in your area, whether it’s your home or office. Once you have that, getting a professional-level wireless router will solidify the result.

2. Delete your cached files

If you are using the web version of Slack and have noticed it slowing down lately, you should try clearing your cache. Every time you visit any website, your browser saves certain bits of information to load the page faster next time. But eventually your browser cache will in fact slow down your web performance. So it’s good to remember to delete cached files once in a while (e.g. once a month).

To clear cache in Google Chrome (other browsers work similarly):

  1. Go to the triple-dot Menu button > More Tools > Clear browsing data…
  2. Select the time range you want to delete the data from
  3. Check the box next to “Cached Images and Files”
  4. Click Clear Browsing Data

3. Minimize RAM usage

Most of the time, sluggish app performance has little to do with how powerful your processor is and everything with how much RAM is at the app’s disposal. As Slack is being used constantly throughout the day, it tends to consume a lot of memory, even when it’s the web version (then your browser consumes the memory instead).

To free up much needed memory, take a look at how much exactly is being spent on any of the apps at the moment:

  1. Launch Activity Monitor from Applications
  2. Switch tabs to Memory and make note of the apps at the top of the list
  3. Quit all the apps you don’t need right away

If closing the apps and focusing on as few tasks at a time as possible doesn’t bring any significant results, try restarting your Mac, which will reset RAM usage back to zero.

4. Automate your Mac’s optimization with CleanMyMac

While going through your Mac optimization checklist once might seem not so bad, doing it repeatedly every month will soon turn into a chore. Luckily, there is a solution that takes care of all these things automatically — CleanMyMac X.

CleanMyMac X is able to clear the cache and optimize your whole computer in a single click. To do that:

  1. Download CleanMyMac X (free trial available).
  2. Choose Smart Scan in the left-side panel and click Scan.
  3. Proceed to Review Details… and press Run.

The app will instantly get your computer in top shape. For a more thorough cleanup, go through the same process in the Optimization and Privacy tabs, the latter of which also allows you to clear all cached data from your browser.

Now your Mac is ready to take on Slack! Just remember to repeat the optimization process from time to time, whether you are doing it manually or using a more convenient and thorough one-click solution from CleanMyMac X.

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


⚠️ Stuck badge notifications

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

You’re expecting a notification but nothing comes through.


⚠️ Delayed notifications

When your notifications show up slower
than expected.

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

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 ShiftEsc.


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. Tap You at the bottom of your screen.
  2. Tap Preferences.
  3. Tap Send Feedback.
  4. Include a brief summary of the issue, then tap Compose Report.

Step 1: Clear your app cache

  1. Tap You at the bottom of your screen.
  2. Tap Preferences.
  3. Tap Advanced.
  4. Tap Reset Cache and confirm.


Step 2: Send us your logs

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

  1. Tap You at the bottom of your screen.
  2. Tap Preferences.
  3. Tap Send Feedback.
  4. Include a brief summary of the issue, then tap Report issue.

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

Tip: Make sure you haven't paused notifications in Slack. If you see a Do Not Disturb icon next to your name, visit Pause notifications with Do Not Disturb to learn how to resume 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. LocateSlack 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 Site Settings, then select Notifications.
  4. Make sure Ask before sending (recommended) is turned on.
Slack Mac App Not Working

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. Tap You at the bottom of your screen.
  2. Tap Notifications.
  3. Tap Troubleshoot Notifications to run the diagnostic test.

The test will check your notification settings and will flag any issues.

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. Tap You at the bottom of your screen.
  2. Tap Preferences.
  3. Tap Send Feedback.
  4. Include a brief summary of the issue, then tap Compose Report.

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. Tap You at the bottom of your screen.
  2. Tap Notifications.
  3. Tap Troubleshoot Notifications to run the diagnostic test.

The test will check your notification settings and will flag any issues.

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.

Slack Mac App Not Working


Step 4: Send us your logs

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

  1. Tap You at the bottom of your screen.
  2. Tap Preferences.
  3. Tap Send feedback.
  4. Include a brief summary of the issue, then tap Report issue.

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

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 click Submit.
  4. The logs will automatically be attached.

Step 1: Check your mobile notification settings

  1. Tap You at the bottom of your screen.
  2. Tap Notifications.
  3. Tap Notify Me on Mobile, then choose As soon as I'm inactive.


Step 2: Send us your logs

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

  1. Tap You at the bottom of your screen.
  2. Tap Preferences.
  3. Tap Send Feedback.
  4. Include a brief summary of the issue, then tap Compose Report.

Step 1: Check your mobile notification settings

  1. Tap You at the bottom of your screen.
  2. Tap Notifications.
  3. Tap Notify Me on Mobile, then choose As soon as I'm inactive.


Step 2: Send us your logs

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

  1. Tap You at the bottom of your screen.
  2. Tap Preferences.
  3. Tap Send feedback.
  4. Include a brief summary of the issue, then tap Report issue.

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

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 are enabled.

Macbook App Store Not Working


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

Slack Desktop App Mac

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

Slack Mac App Not Working Free

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. LocateSlack 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.

Slack Mac App Not Working Windows 10

  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.

Slack Will Not Open

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