“Webcam.js (or) Waiting for webcam” error or “AGREE AND CONTINUE” button is disabled. What it means and what to do?

There are three possible cases here:

• Your browser has denied permission to access the webcam. You need to allow the browser to access your webcam to continue with the Assignment/ Assessment
• Webcam not found on your system, please make sure that webcam is working fine on your system
• Webcam's resolution is less than or equal to 0.3 MP. The Minimum supported webcam resolution is 640 * 480