Camera Application in Windows 10

In Windows 10 the Camera application won't work if another application is using the camera.  You will see the error code "AllCamerasAreReserved". You can look in Task Manager to see if there are processes which may be using the camera e.g. Skype. It may also be possible that Privacy Settings prevent access to the camera from the Camera app. These can be altered by typing "Privacy Settings" in the Windows Search Bar, looking under "App Permissions" (below "Windows Permissions") and selecting Camera.