Start with the simplest fixes first
A webcam that won't work usually fails for one of three reasons: it's physically blocked or disconnected, your operating system doesn't recognize it, or the process trying to use it doesn't have permission. Before you assume the hardware is broken, check whether the camera lens has a cover or obstruction, whether the USB cable is fully seated in the port, and whether the device shows up in your system settings at all. Most webcam problems solve themselves once you clear one of these three obstacles.
If your webcam worked yesterday and stopped today, the most likely culprit is a Windows or macOS update that changed how your system handles camera permissions, or a browser update that revoked access to the camera. These changes are usually reversible in under five minutes.
Key Takeaways
- Check the physical connection first: remove and reseat the USB cable, and make sure nothing is covering the lens.
- Open Device Manager (Windows) or System Report (Mac) to confirm your operating system recognizes the webcam as a connected device.
- Grant camera permission to the process that needs it through your system settings, because many programs cannot access the camera without explicit approval.
- Uninstall and reinstall the webcam driver if the device appears in your system but produces no video or a black screen.
- Restart your computer and the process before assuming the hardware has failed, because temporary software conflicts often mimic hardware failure.
Verify the webcam appears in your system settings
Your operating system must recognize the webcam as a connected device before any process can use it. On Windows, open Device Manager by right-clicking the Start menu and selecting "Device Manager". Look for a category called "Cameras" or "Imaging devices". If you see your webcam listed there with no warning icon, your system recognizes it. If the category doesn't exist or your camera has a yellow exclamation mark, Windows doesn't recognize the device properly.
On a Mac, click the Apple menu, select "About This Mac", then click "System Report". Choose "USB" from the left sidebar and look for your webcam in the list of connected devices. If it appears, your Mac recognizes it. If it doesn't appear, the connection is the problem.
If your system doesn't recognize the webcam, try unplugging it, waiting 10 seconds, and plugging it into a different USB port on the same computer. If it still doesn't appear, try a different USB cable if you have one available. A damaged cable is a common cause of unrecognized devices.
Check process permissions on Windows
Windows 10 and later require you to grant camera permission to each process individually. Open Settings by pressing Windows key + I. Go to "Privacy & Security" in the left sidebar, then click "Camera". You'll see a toggle for "Camera access" at the top — make sure it's turned on. Below that, you'll see a list of applications. Find the program you're trying to use the webcam with (such as Zoom, Teams, or Chrome) and make sure its toggle is also on.
If the process you want to use isn't listed, it means it has never requested camera access. Open that process and try to use the camera feature. Windows will prompt you to grant permission. Click "Yes" when the permission dialog appears.
After you grant permission, close the process completely and reopen it. The permission change takes effect when the process starts fresh.
Check camera access on Mac
macOS also requires per-process camera permission. Click the Apple menu and select "System Settings". Click "Privacy & Security" in the sidebar, then select "Camera". You'll see a list of applications that have requested camera access. Make sure the toggle next to the process you want to use is turned on.
If your process isn't listed, open it and attempt to use the camera. macOS will show a permission prompt. Click "Allow" to grant access. Close the process and reopen it for the permission to take effect.
On Mac, you may also need to grant microphone permission separately if your process needs audio. This is in the same Privacy & Security menu under "Microphone".
Update or reinstall the webcam driver
A driver is software that tells your operating system how to communicate with the webcam hardware. If the driver is outdated or corrupted, the system may recognize the device but produce no video. On Windows, right-click your webcam in Device Manager and select "Update driver". Choose "Search automatically for updated driver software". Windows will check for a newer version online.
If updating doesn't work, right-click the webcam again and select "Uninstall device". Restart your computer. Windows will automatically reinstall the driver when it boots. This often fixes a driver that has become corrupted.
On Mac, drivers are built into the operating system and cannot be updated separately. If your Mac recognizes the webcam but it produces no video, restart your computer. If the problem persists after restart, the hardware may be failing.
Restart the process and your computer
Before you assume the webcam is broken, close the process completely and reopen it. Many video problems are temporary conflicts between the process and your system that clear themselves when the process restarts. Close all browser tabs using the camera, close the video call process, and close any other programs that might be accessing the camera.
If restarting the process doesn't work, restart your entire computer. A full system restart clears temporary software conflicts that can prevent the camera from working. After your computer boots, open the process again and test the camera.
If the camera works after a restart, the problem was a temporary conflict. If it still doesn't work, move to the next step.
Test the webcam in a different process
If one process can't access your camera but another can, the problem is with that specific process, not your hardware. For example, if Zoom works but Google Meet doesn't, the issue is with Meet's settings or permissions, not the webcam itself.
On Windows, open the Camera app (search for "Camera" in the Start menu). If you see video, your webcam works. If you see a black screen or an error message, the problem is with your system or driver, not the process you were originally trying to use.
On Mac, open Photo Booth (search for it in Spotlight). If you see video, your webcam works. If you see a black screen, the problem is system-level.
Once you confirm the camera works in one process, go back to the process that wasn't working and check its camera settings. The process may be set to use a different camera, or it may need permission to be granted again.
When to contact the manufacturer or a technician
If your system recognizes the webcam, you've granted all necessary permissions, you've updated the driver, and the camera still produces no video in any process, the hardware itself may be failing. At this point, contact the webcam manufacturer's support line or consult a computer technician. Provide them with the model number of your webcam (visible in Device Manager or System Report) and describe what you've already tried.
If the webcam is built into your laptop, the repair usually requires opening the device, which is best left to a professional. If it's an external USB webcam, you can try it on a different computer to confirm whether the problem is the camera or your system. If it works on another computer, the problem is your original computer's settings or drivers.
Frequently Asked Questions
Why does my webcam show a black screen even though it's connected?
A black screen usually means the system recognizes the camera but the driver is outdated or corrupted. Try updating the driver in Device Manager (Windows) or restarting your computer (Mac). If that doesn't work, uninstall and reinstall the driver. Also check that no other process is using the camera at the same time — only one program can access it at once.
My webcam worked in Zoom but not in Google Meet. What's wrong?
The problem is with Google Meet's settings or permissions, not your camera. Check that Meet has camera permission in your system settings, and check Meet's own settings to make sure it's set to use the correct camera. Close Meet completely and reopen it. If other applications can use the camera, your hardware is fine.
Do I need to install software to use my webcam?
Most modern webcams work without installing anything — Windows and Mac recognize them automatically. Some older or specialty webcams come with driver software on a disc or downloadable from the manufacturer's website. Check the documentation that came with your camera. If you can't find it, search the manufacturer's website for your camera model and "driver" or "software".
Can I use my phone as a webcam instead?
Yes, but you need third-party software. Applications like Iriun, DroidCam, and Codepoint allow you to connect your phone to your computer via USB or Wi-Fi and use it as a webcam. These applications handle the connection and let your video call software see the phone camera as if it were a regular webcam. Check your phone's app store for these options.
Why does my webcam stop working after a Windows update?
Windows updates sometimes change how the system handles camera permissions or reset driver settings. After an update, check your camera permissions in Settings (Privacy & Security > Camera) and make sure they're turned on. Also check Device Manager to see if the driver needs updating. If the camera worked before the update and doesn't now, these two steps usually fix it.