Camera access denied on a USB-C webcam: first checks

A camera access denial does not automatically mean your USB-C webcam is broken. The browser, computer privacy settings, another app, or the USB connection may be blocking it.

Start with a separate browser test, then check permissions and the connection in order. This helps you tell an access problem from a camera that the computer cannot detect.

Find the cause

1. Open the Camera Test and allow camera access if the browser asks. The test shows a live preview, resolution, and frame rate. If access was already denied, continue to the permission checks below.
2. Check the browser's permission for the test page. Select the site controls icon beside the address bar and make sure Camera is allowed for the page. Reload it after changing the setting.
3. Check whether the operating system allows your browser to use the camera. The system privacy controls are separate from the browser's site permission.
4. Close video-call, recording, and camera apps, then try the test again. Another app may be using the webcam or keeping it from starting in the browser.
5. Disconnect and reconnect the webcam. If it is connected through a dock or hub, try a direct USB-C port on the computer, if available.
6. Try the test in another supported browser. If the camera works there, the issue is likely a permission or browser setting rather than the webcam itself.

What the result means

The preview appears

The browser can access a camera. Check the preview to see whether it is the USB-C webcam or the computer's built-in camera. If the preview works in the test but not in a meeting app, select the USB-C webcam in that app's camera settings and check its own permission.

The browser says access is denied

The browser or operating system is refusing permission. This does not show that the camera is damaged. Check both levels of permission, then reload the page. If the browser never asks again, it may have saved a blocked choice.

The test shows a different camera

Your computer has more than one camera, and the browser may have selected the built-in one. Choose the USB-C webcam in the browser's camera setting when that option is available, or select it in the app you want to use.

No preview appears after permission is allowed

The browser may not be receiving a usable camera feed. The webcam may be disconnected, the USB-C port or hub may not be passing data, or another app may be interfering. Check the connection and test again with other camera apps closed.

The webcam works in one browser but not another

The camera and its connection are at least partly working. Compare the two browsers' site permissions and check whether one has a camera selected that is different from the one you want to use.

How to fix access

1. Allow the site in your browser. Open the camera permission for the page using the site controls beside the address bar, set Camera to Allow, and reload the page. In Chrome or Edge, you can also review camera access under Settings › Privacy and security › Site settings › Camera.
2. Allow camera access in Windows or macOS. On Windows 11, open Settings › Privacy & security › Camera and turn on camera access and access for desktop apps. On a Mac, open System Settings › Privacy & Security › Camera and allow your browser. If your browser is not listed, open the page and make a camera request first, then check the list again.
3. Choose the USB-C webcam in the app. A successful browser test does not change which camera a meeting or recording app uses. Open that app's video settings and select the external webcam rather than the built-in camera.
4. Close other camera apps. Quit meeting apps, camera previews, and recording software, including apps running in the background. Then close and reopen the browser and test again.
5. Reconnect the webcam directly. Unplug it, wait a few seconds, and connect it to another USB-C port if possible. Bypass a hub or dock for the test. A USB-C connector describes the plug, but the port, adapter, and cable still need to support the data connection the webcam uses.
6. Restart the computer. If the permissions and connection look right but the webcam still will not start, restart the computer and test before reopening other camera apps.

When to suspect the webcam or connection

If the webcam fails in more than one browser and in other camera apps, check whether the computer recognizes it in its camera or device settings. Try a different data-capable cable if the webcam has a detachable cable, and test a different port without the hub. A USB-C port can provide power without a particular adapter or cable carrying camera data reliably.

If the webcam still cannot be detected on another computer with a known-good connection, the webcam or its cable may be faulty. Check the warranty or ask a repair shop to inspect it. If it works on another computer, focus on the original computer's permissions, ports, and USB accessories instead.

Why a browser test helps

A browser test separates camera access from the settings of a particular meeting app. If the Camera Test shows a clear preview, the webcam can provide video to the browser. That does not guarantee every app has permission, picked the same camera, or supports the same camera settings.

The test asks for permission before using the camera. Its preview is processed on your device and camera footage is not uploaded. After testing, close the page or revoke its camera permission in the browser if you no longer want the site to access the webcam.