Bluetooth and Nearby Sharing

I have my Desktop and Notebook paired. This is shown in the Bluetooth and Device settings.

The Bluetooth icon in the Action Center of each computer shows Not Connected. Because of this, the send/receive files feature of Bluetooth will not work.

After two hours of fiddling with it, I found that if I right click on a file in Windows Explorer, and select Share, I am given the option of Sharing with nearby devices using Bluetooth and wi-fi. When I select a device, the Bluetooth Icon in the Action Center shows the Bluetooth is connected to the other computer and the transfer works.

So why does it work through Explorer, but not send/receive method?

BTW, Bluetooth will connect to a device such as a mouse or keyboard without a problem.

QUITE LOOKING! I found it!

Apparently at one time a file sent via Bluetooth file could be received automatically. But for security reasons, Microsoft took that away.

To make the Bluetooth transfer work (using the send/receive feature), you must prepare the receiving computer to receive the file. So, either using the Bluetooth taskbar icon on the receiving computer or the send/receive feature in the Bluetooth Settings and Devices window, select Receive a File before sending the file from the sending computer.

On to the next mystery!