You can use DriverSupport to easily do this. If you’re having this problem, we advise you to try updating your drivers. Sometimes webcam problems can be caused by outdated or missing drivers.
Solution 4: Automatically update your drivers
If the problem appears only with a specific app, check the Choose apps that can use your camera list and make sure that the camera is enabled for that app. Now select the Allow apps to access your camera option.
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Solution 1: Use Windows Registry to Fix Webcam Issue (Manual Fix)