First, make sure the Allow access to the camera on this device and Allow apps to access your camera are both on.On your keyboard, press the Windows logo key + I and click Privacy.Follow these steps to allow your device to access your camera:
The most possible cause of your Logitech C922 not working is the wrong privacy settings. You don’t have to try them all just work your way down the list until you find the one that works for you. Note: Before moving on to the following fixes, please make sure the cable is firmly plugged in (you can unplug and plug it back) and try another USB port to rule out a faulty port.