CAMERA NOT CONNECTED

Greetings: First of all, Apple Support was fantastic from start to finish. Even after many dropped calls from my service provider, Apple Support kept on reconnecting to me. As so often is the case, the complex solutions were attacked first, however, the solution was in simplest place. The webcam had been blocked inside the Privacy Settings of my antivirus program. It was there right in front of me every time I booted my MacBook Air when I got a pop up message telling me the webcam was blocked. However, this pop up message was on my MacBook and the problem was on my wife's MacBook. It took a lot of time and frustration, but then a long break overnight cleared my head to get to the answer.