Disabling bluetooth discoverability in Win10 Pro 1903

Question

Can't seem to figure out how to disable discoverability when Bluetooth is switched on. 

I just want to use Bluetooth without it also advertising itself to all nearby devices ALL the time.  All prior versions of windows and all other operating systems I've ever used offer this basic security and privacy option.

Here is the view in settings.  How do I change it to non discoverable?

In the more options panel there is this where discoverability is actually disabled.  However this panel does not actually appear to do anything.

Bluetooth is via Intel AX200

I know discovery can be stopped via a hack where Bluetooth support service is disabled in the SCM however I'm mostly using Bluetooth PAN which does NOT work at all with Bluetooth service disabled.

Is there an option to disable discoverability I'm simply overlooking or even a registry setting that can be changed?  If not currently possible does Microsoft intend to address this?

Answer 1

Found a solution which prevents discoverability of computer while still allowing you to pair with discoverable devices and use PAN.

In device manager expand Bluetooth then right click your Bluetooth device.  Select properties, details tab and pick 'device instance path' from selection list.  Value displayed here is needed in the next step.

Open registry go to:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Enum

Under "Enum" fully expand entry corresponding with earlier 'device instance path' value.

Under "Device Parameters" add or edit attribute "Write Scan Enable" of type DWORD 32-bit and set value 0.

You may either disable then re-enable Bluetooth device from device manager or reboot computer for change to take effect.