Fix Microsoft Teams No Sound on Windows 10

If Microsoft Teams produces no sound on Windows 10, the fix usually involves checking the correct output device, updating audio drivers, and clearing the Teams cache. This guide walks through the most common causes and step-by-step solutions, from quick settings checks to deeper system-level fixes.

Why Teams Has No Sound on Windows 10

Teams relies on Windows’ audio system, so the problem often lies in a mismatch between Teams’ selected speaker and the device Windows is using. Other frequent culprits include:

• Teams is muted or set to a different output device than your speakers or headphones.
• The Windows volume mixer has Teams muted or set very low.
• Outdated or corrupted audio drivers.
• A corrupted Teams cache that breaks audio routing.
• Background apps or Windows sound enhancements interfering.

Quick Checks Before Troubleshooting

1. Click your profile picture in Teams, select Settings > Devices, and verify the Speaker dropdown shows the device you’re actually using.
2. Test the speaker by clicking Make a test call in the same settings page. This plays a ringtone and lets you record a message.
3. Check the Windows volume mixer (right-click the speaker icon in the taskbar, then Open Volume Mixer) and ensure Teams isn’t muted.
4. Confirm the physical volume on your speakers or headphones is turned up and not muted.

Set the Correct Output Device in Windows and Teams

Windows 10 can route audio to a different device than the one Teams uses. To align them:

1. Right-click the speaker icon in the system tray and choose Open Sound settings.
2. Under Output, select the device you want (e.g., Speakers, Headphones).
3. In Teams, go to Settings > Devices and choose the same device from the Speaker dropdown.
4. If you have multiple audio devices (like a USB headset and built-in speakers), make sure Teams isn’t sending audio to a device that’s turned off.

Update or Reinstall Audio Drivers

Outdated or faulty audio drivers are a common cause of no sound. Here’s how to update them:

1. Press Windows + X and select Device Manager.
2. Expand Sound, video and game controllers.
3. Right-click your audio device (e.g., Realtek High Definition Audio) and choose Update driver.
4. Select Search automatically for drivers. If Windows finds nothing, visit your PC or sound card manufacturer’s website for the latest driver.
5. If updating doesn’t work, right-click the device and choose Uninstall device, then restart your PC. Windows will reinstall the driver automatically.

Clear the Teams Cache

A corrupted cache can break audio. Clearing it forces Teams to rebuild its configuration files. This is safe and doesn’t delete your messages or files.

1. Close Teams completely. Right-click the Teams icon in the system tray and choose Quit.
2. Press Windows + R, type %appdata%\Microsoft\Teams, and press Enter.
3. Delete the contents of the following folders (if they exist): Cache, Code Cache, GPUCache, blob_storage, databases, tmp.
4. Restart Teams. It will recreate these folders.

Disable Audio Enhancements and Exclusive Mode

Windows audio enhancements can sometimes interfere with Teams. To disable them:

1. Right-click the speaker icon and choose Open Sound settings.
2. Under Output, click Device properties.
3. Click Additional device properties at the bottom.
4. Go to the Enhancements tab and check Disable all enhancements.
5. Go to the Advanced tab and uncheck Allow applications to take exclusive control of this device.
6. Click OK and test Teams again.

Reinstall or Repair Teams

If nothing else works, the Teams installation itself may be corrupted. Reinstalling resets all settings and files.

1. Uninstall Teams via Settings > Apps > Apps & features.
2. Restart your PC.
3. Download the latest Teams installer from the official Microsoft website and install it.
4. Sign in and test audio.

Frequently Asked Questions

Why does Teams have sound on calls but not on notifications?

Notification sounds are controlled separately. In Teams, go to Settings > Notifications and check that the sound toggle is enabled. Also ensure Windows notifications for Teams are not muted in Settings > System > Notifications & actions.

Can a VPN cause Teams to have no sound?

Yes, a VPN can interfere with the audio stream, especially if it routes media traffic through a server that blocks certain ports. Try disconnecting the VPN and testing. If audio works, reconfigure the VPN to allow Teams traffic or use split tunneling.

Why does Teams work in the web browser but not the desktop app?

This usually points to a corrupted desktop app cache or a conflict with the app’s audio settings. Clearing the cache (as described above) or reinstalling the app often resolves it. The browser version uses different audio routing, so it can work even when the desktop app fails.

How do I fix Teams no sound after a Windows update?

Windows updates can change audio driver settings. First, run the Audio troubleshooter (Settings > Update & Security > Troubleshoot > Playing Audio). If that doesn’t help, roll back the audio driver in Device Manager (right-click device > Properties > Driver > Roll Back Driver) or reinstall the latest driver.

Is there a keyboard shortcut to mute/unmute in Teams?

Yes, the default shortcut to mute or unmute your microphone is Ctrl+Shift+M. This affects your mic, not your speakers. If you have no sound, check that you haven’t accidentally muted the call itself using the on-screen microphone icon.

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