Summary

This guide helps you troubleshoot and resolve: How to fix Microsoft Teams camera or microphone not working during meetings. Follow the steps below to fix the issue.

Common Causes

When your camera or microphone stops working in Microsoft Teams, it usually comes down to one of three things: the wrong device is selected, an app permission has been blocked, or another application is hogging the hardware. This guide walks you through the most common causes and how to fix them so you can get back into your meeting with audio and video working properly.

Quick Fix Steps

Before diving into detailed troubleshooting, try these steps first. They resolve the issue in most cases.

1. Quit and reopen Microsoft Teams. Fully close the app (including from the system tray or menu bar) and start it again.
2. Check that the correct device is selected in Teams. Click the More actions (...) menu in a meeting or chat, choose Settings, then review the Audio devices and Camera dropdowns.
3. Make sure nothing else is using your camera or microphone. Close Zoom, Google Meet, Skype, browser tabs, or any recording software that may have exclusive access.
4. Restart your computer. This clears stuck device handles and resets background services.

If your camera or microphone still isn't working after these steps, move on to the detailed instructions below.

Detailed Instructions

Check Teams In-App Device Settings

The first place to verify your devices is inside Teams itself. Teams can override your system defaults, so even if your microphone works elsewhere, it may not be selected here.

1. Open Microsoft Teams and click the More actions (...) menu next to your profile picture.
2. Select Settings.
3. Go to Devices on the left.
4. Under Audio devices, choose your preferred microphone and speaker from the dropdown menus.
5. Under Camera, choose your preferred camera.
6. Use the Make a test call button under Audio devices to confirm everything is working.

Check Operating System Privacy Permissions

Modern operating systems require apps to be granted access to your camera and microphone. If permission was denied, Teams will appear to have no camera or microphone available.

Windows 10 and 11

1. Open Settings from the Start menu.
2. Go to Privacy & security (Windows 11) or Privacy (Windows 10).
3. Click Microphone and ensure Microphone access is turned on.
4. Scroll down and confirm Let desktop apps access your microphone is enabled, and that Microsoft Teams is listed and switched on.
5. Go back and repeat for Camera.

macOS

1. Open System Settings (or System Preferences on older versions).
2. Go to Privacy & Security.
3. Select Microphone and tick the box next to Microsoft Teams.
4. Select Camera and tick the box next to Microsoft Teams.
5. Quit and reopen Teams for the changes to take effect.

Check Browser Permissions (Teams in a Web Browser)

If you are using Teams in Chrome, Edge, Firefox, or Safari, the browser controls access to your camera and microphone.

1. Look for a small camera or microphone icon in your browser's address bar (usually on the left).
2. Click it and review the permissions for the current site.
3. Ensure both Camera and Microphone are set to Allow.
4. Reload the Teams tab.

For Chrome, you can also check by going to Settings > Privacy and security > Site settings > Camera or Microphone, then review the blocked sites list.

Update or Reinstall Audio and Camera Drivers (Windows)

Outdated or corrupted drivers are a common cause of devices disappearing from Teams entirely.

1. Right-click the Start button and select Device Manager.
2. Expand Audio inputs and outputs and Cameras.
3. Right-click your microphone or camera and choose Update driver.
4. Select Search automatically for drivers.
5. Restart your computer when finished.

If updating does not help, right-click the device and choose Uninstall device, then restart. Windows will attempt to reinstall the driver automatically.

Troubleshooting

Other Participants Cannot Hear You, But You Can Hear Them

This almost always means your microphone is muted in Teams or blocked at the system level.

• Check the microphone toggle in your meeting controls. The icon should not show a slash through it.
• Verify the correct microphone is selected under Settings > Devices in Teams.
• Confirm the operating system privacy settings above are enabled for Teams.
• Test your microphone in another application, such as Voice Recorder on Windows or Voice Memos on macOS. If it does not work there either, the issue is with the device or driver, not Teams.

Other Participants Can Hear You, But You Cannot Hear Them

The issue is with your speaker or audio output.

• Check the volume slider in Teams under Settings > Devices.
• Make sure your system volume is not muted and is turned up.
• Confirm the correct speaker is selected in the Audio devices dropdown.
• If you are using a headset, unplug it and try your computer's built-in speakers to isolate the problem.

Camera Shows a Black or Frozen Image

• Close any other application that may be using the camera, including browser tabs and photo apps.
• Unplug external USB cameras and reconnect them.
• Restart Teams fully, including from the system tray on Windows or the menu bar on macOS.
• Try the camera in another app, such as the built-in Camera app on Windows or Photo Booth on macOS.

Devices Work in Other Apps but Not in Teams

This usually points to a corrupted Teams cache.

1. Fully quit Microsoft Teams.
2. On Windows, press Win + R, type %appdata%\Microsoft\Teams, and press Enter.
3. On macOS, open Finder and press Cmd + Shift + G, then enter ~/Library/Application Support/Microsoft/Teams.
4. Delete the contents of the Cache, blob_storage, databases, GPUCache, and IndexedDB folders.
5. Restart Teams. Your sign-in details will be preserved.

Teams Freezes or Crashes When Camera Turns On

• Update Teams to the latest version by clicking the More actions (...) menu next to your profile picture and selecting Check for updates.
• Disable hardware acceleration in Teams under Settings > General by turning off Disable GPU hardware acceleration (note: the toggle label is worded as a disable action, so ensure it is switched off to enable acceleration).
• Close other applications that may be competing for camera resources.
• If the issue persists, clear the Teams cache using the steps in the previous section.
• As a last resort, uninstall Teams completely and reinstall the latest version from the Microsoft website.

If you have tried all of the steps above and your camera or microphone still does not work in Teams, the issue may be hardware-related. Test the device on another computer to confirm, and contact your IT support team for further assistance.

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