failed to discover devices in windows11

[zerobikappa]

run bluetoothdevicepairing discover in powershell or cmd but the output only replied:

Failed: The parameter is incorrect.

The provided device ID is not a valid BluetoothDevice object.

May I know how can I get the device ID before discovering?

[PolarGoose]

Hello @zerobikappa,

Thank you for the report.
Could you please provide more details:

• What is your OS?
• Is it the full output that you see in the console?

[PolarGoose]

I think I understand what is going on:
I have found a similar issue: [CRSH] The provided device ID is not a valid BluetoothDevice object.
That was fixed in the following way: fix: fixed crash caused by unhandled exception in WindowsRT's device

I have fixed it and created a new version.
Could you please check if it works for you?
https://github.com/PolarGoose/BluetoothDevicePairing/releases/tag/v12.0

[zerobikappa]

I tested with the new release. Now it can succeed to pair and connect.

I also found that in some situations, it may show different error message, which may be related to user spaces and permission:
(1) When I login with normal desktop, I can use BluetoothDevicePairing.exe in powershell to pair and connect:

PS> BluetoothDevicePairing.exe discover
-------------------------------------------------------------------------
|  |16:01:18:27:16:4d|         |T3                                      |
-------------------------------------------------------------------------

PS> BluetoothDevicePairing.exe pair-with-mac --mac 16:01:18:27:16:4d --type Bluetooth
Create Bluetooth device using Mac:'16:01:18:27:16:4d'
Request to pair device [name:'T3' mac:'16:01:18:27:16:4d' type:'Bluetooth' ConnectionStatus:'NotPaired']
Start pairing
Pairing mode: ConfirmOnly
Device has been successfully paired

(2) When I login via RDP, I could use GUI panel to pair and connect, but failed to use BluetoothDevicePairing.exe in powershell:

PS> BluetoothDevicePairing.exe discover
Start discovering devices for 10 seconds
Warning: failed to get information from the discovered device [T3; Bluetooth#Bluetooth00:a7:3c:19:05:ff-16:01:18:27:16:4d]. Error message: The type initializer for 'BluetoothDevicePairing.Bluetooth.Devices.AudioDevices.AudioDeviceEnumerator' threw an exception.

PS> BluetoothDevicePairing.exe pair-by-mac 16:01:18:27:16:4d --type Bluetooth
Create Bluetooth device using Mac:'16:01:18:27:16:4d'
Unexpected failure: System.TypeInitializationException: The type initializer for 'BluetoothDevicePairing.Bluetooth.Devices.AudioDevices.AudioDeviceEnumerator' threw an exception. ---> System.NullReferenceException: Object reference not set to an instance of an object.
   at BluetoothDevicePairing.Bluetooth.Devices.AudioDevices.AudioDeviceEnumerator.<EnumerateConnectors>d__5.MoveNext()
   at BluetoothDevicePairing.Bluetooth.Devices.AudioDevices.AudioDeviceEnumerator..cctor()
   --- End of inner exception stack trace ---
   at BluetoothDevicePairing.Bluetooth.Devices.AudioDevices.AudioDeviceEnumerator.GetAudioDevices(Guid containerId)
   at BluetoothDevicePairing.Bluetooth.Devices.Device..ctor(DeviceInformation info)
   at BluetoothDevicePairing.Bluetooth.Devices.BluetoothDevice.FromMac(DeviceMacAddress mac)
   at BluetoothDevicePairing.Commands.Utils.DeviceFinder.FindDevicesByMac(DeviceMacAddress mac, DeviceType deviceType)
   at BluetoothDevicePairing.Commands.PairDeviceByMac.Execute(PairDeviceByMacOptions opts)
   at CommandLine.ParserResultExtensions.WithParsed[T](ParserResult`1 result, Action`1 action)
   at Program.<<Main>$>g__ParseCommandLineAndExecuteActions|0_0(String[] args)
   at Program.<Main>$(String[] args)

(3) When I login via ssh(no GUI)(ssh will default to login with administrator privilege), I could discover device but failed to connect them:

PS> BluetoothDevicePairing.exe discover
Start discovering devices for 10 seconds
-------------------------------------------------------------------------
|  |16:01:18:27:16:4d|         |T3                                      |
-------------------------------------------------------------------------

PS> BluetoothDevicePairing.exe pair-by-mac --mac 16:01:18:27:16:4d --type Bluetooth
Create Bluetooth device using Mac:'16:01:18:27:16:4d'
Request to pair device [name:'T3' mac:'16:01:18:27:16:4d' type:'Bluetooth' ConnectionStatus:'NotPaired']
Start pairing
Failed: Failed to pair device. Status = Failed

[zerobikappa]

my windows version:

Edition Windows 11 Pro
Version 23H2
Installed on ‎7/‎31/‎2023
OS build 22631.4169
Experience Windows Feature Experience Pack 1000.22700.1034.0

[PolarGoose]

@zerobikappa,

Thank you for sharing the details.
I have never considered using RDP or SSH. Now, I know how to reproduce the issue if necessary.
I think the problem is with the Windows.Devices.Enumeration API, which I use to work with Bluetooth.

When I login via RDP, I could use GUI panel to pair and connect

This GUI uses a different API

may be related to user spaces and permission

Yes, I think it is probably the cause.
Unfortunately, I'm not sure anything can be done about it unless I rewrite the code using WinApi.

As a workaround, you can try using Bluetooth Command Line Tools. I used them before I made BluetoothDevicePairing utility.