Audio Not Working on Mac? Fixes That Work

If your Mac’s audio has suddenly stopped working, the fix is often simpler than you think—check the output device, volume, and mute settings first, then restart the core audio process if needed. This guide walks through the most common causes and step-by-step solutions to get sound back on your Mac, whether the issue is with built-in speakers, headphones, or external devices.

Why Mac Audio Stops Working

Audio problems on macOS usually stem from one of a few areas: the selected output device, system or app volume settings, a stuck core audio process, or a physical connection issue. Less common but possible causes include software bugs after a macOS update, corrupted audio preferences, or hardware failure. Understanding which category your issue falls into helps you apply the right fix quickly.

Quick Checks Before You Dig Deeper

Before restarting anything, run through these quick checks—they resolve a surprising number of cases:

• Check the obvious: Press the F10 or F11 keys (or the volume keys on a MacBook’s Touch Bar) to make sure volume isn’t muted or set to zero.
• Look at the menu bar volume icon: If it shows a muted speaker (with a slash), click it and unmute.
• Inspect the output device: Go to System Settings → Sound → Output and confirm the correct device is selected (e.g., Internal Speakers, not a Bluetooth device that’s off).
• Try a different app: Play audio in another app to see if the problem is app-specific.
• Check physical connections: If using headphones or external speakers, unplug and replug them. Try a different port if available.

Fix 1: Restart the Core Audio Process

The most effective software fix for Mac audio issues is restarting the core audio daemon. This process manages all audio input and output on your Mac. Here’s how:

1. Open Activity Monitor (in Applications → Utilities).
2. Search for coreaudiod in the search field.
3. Select the process and click the X button in the toolbar, then choose Force Quit.
4. The process will automatically restart. After a few seconds, test your audio.

This is safe and won’t harm your system—macOS relaunches coreaudiod automatically. It’s often the go-to fix for audio glitches after a macOS update or when sound suddenly stops.

Fix 2: Reset the Bluetooth Module (If Using Wireless Audio)

If you’re using Bluetooth headphones or speakers, the issue might be a stale Bluetooth connection. To reset the Bluetooth module on your Mac:

1. Hold Shift + Option and click the Control Center icon in the menu bar.
2. Select Bluetooth, then click Reset the Bluetooth module.
3. Wait a few seconds, then try reconnecting your audio device.

This clears temporary Bluetooth glitches without unpairing your devices. If the problem persists, remove the device from Bluetooth settings and pair it again.

Fix 3: Check Sound Input/Output Settings in System Settings

Sometimes macOS automatically switches the output to a device that isn’t actually connected—like a monitor that’s turned off or a Bluetooth device that’s out of range. To correct this:

1. Open System Settings (from the Apple menu or Spotlight).
2. Click Sound in the sidebar, then select the Output tab.
3. Look at the list of devices. The one with a checkmark is the current output. If it’s not the built-in speakers or your intended device, select the correct one.
4. Also check the Input tab—if your Mac is trying to use an external mic that isn’t present, it can sometimes interfere with audio processing.

Fix 4: Reboot and Reset NVRAM (Intel Macs) or Check for Updates

A simple restart often clears temporary software glitches. If that doesn’t work:

• On Intel Macs: Shut down your Mac, then turn it on and immediately press and hold Option + Command + P + R for about 20 seconds. This resets NVRAM, which stores sound volume and other settings. (Apple Silicon Macs don’t need this—reset is automatic on reboot.)
• Check for macOS updates: Go to System Settings → General → Software Update and install any pending updates. Audio bugs are often fixed in point releases.

Common Misconception: “My Mac’s Speakers Are Broken”

Many users assume hardware failure when they hear no sound, but in the vast majority of cases, it’s a software issue. The coreaudiod restart fixes a large percentage of problems. If you’ve tried all the software fixes and still have no audio, it’s worth testing with a different user account (to rule out corrupted preferences) and booting into Safe Mode. If the issue persists in Safe Mode, then hardware may be at fault, and you should contact Apple Support or an authorized service provider.

Frequently Asked Questions

Why is my Mac volume greyed out?

A greyed-out volume slider usually means the selected output device doesn’t support volume control, or macOS thinks no output device is available. Go to System Settings → Sound → Output and choose a different device, like Internal Speakers. If that doesn’t work, restart coreaudiod as described above.

How do I fix audio not working on my MacBook Pro?

Start with the quick checks (volume, mute, output device). Then restart coreaudiod via Activity Monitor. If you’re using Bluetooth, reset the Bluetooth module. If the issue persists, reboot your Mac and check for macOS updates. These steps cover most MacBook Pro audio problems.

Why is there no sound after a macOS update?

macOS updates can sometimes cause audio settings to reset or the core audio process to behave oddly. The coreaudiod restart is the most effective fix. If that doesn’t work, check that your output device is still selected correctly in System Settings, and consider resetting NVRAM on Intel Macs.

My Mac plays sound through headphones but not speakers—why?

This usually indicates a problem with the internal speakers or the audio jack’s detection mechanism. Try cleaning the headphone jack (if present) with a dry cotton swab. If the issue persists, it may be a hardware problem with the speakers, and you should contact Apple support.

Can I fix Mac audio by deleting a preferences file?

Yes, corrupted audio preferences can cause issues. Go to ~/Library/Preferences/ and locate com.apple.audio.AudioMIDISetup.plist or com.apple.soundpref.plist. Move them to the Desktop (as a backup), then restart your Mac. macOS will recreate them. This is a slightly more advanced step, so only try it if the other fixes don’t work.

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