Error getting ble device services using FromBluetoothAddressAsync

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it's A known problem with some microsoft security issue https://social.msdn.microsoft.com/Forums/en-US/58da3fdb-a0e1-4161-8af3-778b6839f4e1/bluetooth-bluetoothledevicefromidasync-does-not-complete-on-10015063?forum=wdk

adding registery CoInitializeSecurity values as mentioned fixed the problem!

i'm trying to read A BLE device services using An Advertisment watcher. i've implemnted the service read inside the listenter, the Code:

   private async void OnAdvertisementReceived(BluetoothLEAdvertisementWatcher watcher, BluetoothLEAdvertisementReceivedEventArgs args)
    {

        if (!gotSignal)
        {
            gotSignal = true;
            device = await Windows.Devices.Bluetooth.BluetoothLEDevice.FromBluetoothAddressAsync(args.BluetoothAddress);
            service = await GattDeviceService.FromIdAsync(device.DeviceId);

        }
          ...
     }

the problem is that I can't get the BluetoothLEDevice object, when I reach this line, it is not getting back any value and it skips the next lines inside the listener. NOTE: I've installed windows creators update and before the installation, the function BluetoothLEDevice.FromBluetoothAddressAsync has worked.

I asked a similar question yesterday: http://stackoverflow.com/q/43568096/3187714 Are you running as desktop/exe program or a UWP application? For me, this code works as a UWP app but not as a desktop exe. — JFar, Apr 23 '17 at 13:01
I know, I'm intersted on getting the device services without pairing. — Michael Gabbay, Apr 23 '17 at 15:23
The new Creators no pairing code also works fine in a UWP app. I too am interested in not having to pair with a windows desktop program. I updated my similar question because after a bit more research, I found my problem is the same as yours -- FromBluetoothAddressAsync never seems to return. — JFar, Apr 23 '17 at 19:13
I did find if I added the optional second argument BluetoothAddressType.Public to FromBluetoothAddressAsync, the function returns, but unfortunately the return device is null... BluetoothLEDevice.FromBluetoothAddressAsync(args.BluetoothAddress, BluetoothAddressType.Public); — JFar, Apr 23 '17 at 19:22

score 1 · Accepted Answer · answered Jun 25 '17 at 15:47

Solution

it's A known problem with some microsoft security issue https://social.msdn.microsoft.com/Forums/en-US/58da3fdb-a0e1-4161-8af3-778b6839f4e1/bluetooth-bluetoothledevicefromidasync-does-not-complete-on-10015063?forum=wdk

adding registery CoInitializeSecurity values as mentioned fixed the problem!

Error getting ble device services using FromBluetoothAddressAsync

1 Answers1