Bluetooth Microphone does not work on Windows10 (Headsets & Headphones) (how to fix) ?

In case you are having trouble width your Bluetooth headset microphone when using Zoom, WebEx or other meeting apps. This video explains in step-by-step instructions how to fix the microphone of your Bluetooth headset or headphones on a Windows 10 computer or laptop. The majority of the time the problem is that the Bluetooth headset is connected correctly to the computer, but the microphone of the headset is not selected as input device. This setting is not adjusted by default and has to be done manually in the sound settings menu.