If you have an external USB camera, simply unplug it and plug it back in. It should re-engage after you refresh the page.
Another option is to reboot the machine. It sounds like something every tech team will say but it's because it really does work! It solves about 90% of the audio issues we see.
How to control which apps can use the camera in Windows
- Go to Start, then select Settings > Privacy > Camera.
- Choose your preferred setting for Let apps use my camera.
- Under Choose apps that can use your camera, turn on or off individual settings for apps and services.
How to control which apps can use the microphone
- Go to Start, then select Settings > Privacy > Microphone.
- Choose your preferred setting for Let apps use my microphone.
- Under Choose apps that can use your microphone, turn on or off the individual settings for apps and services.