Here’s how to check and change the output device for sound on your Mac. Hence, it’s important to check what the selected sound output device is to ensure you get the notification sound from Slack. In such situations, it’s possible that your Mac automatically chooses to change the output device to any of the connected options. Sometimes, you may have multiple devices connected to your Mac like a monitor, an external microphone, and maybe even some headphones. This is a continuation of the last point mentioned in the previous step. Check if you’ve just forgotten to disconnect such devices before you blame your speakers. Note: Several times, your Mac may have connected to a Bluetooth device.

This could rid you of the worry of why your Slack is not making notification sounds. If you’re using headphones, you can repeat the test while you have them on. Can you hear the audio? If not, it’s probably your speakers that are ready to eat up your job. Head over to YouTube on your Mac and play any video of your choice. A simple way to test this is to play any other audio file. Is your speaker volume high? Yet, you don’t hear the ring of your Slack notifications? Maybe there’s an issue with your speakers. Who knows, maybe this small fix could save your job! 2. So, check if your volume bar is set on the higher side to resolve Slack notification sounds not working on your Mac. Don’t you worry, forgetting to turn up the volume at times is only human! Check if your speaker volume is turned on.

Before you start panicking, let’s start with the most basic solution.

Mac slack notifications not working