access denied when writing to property store

[pavlexander]

Hey

on windows 11, cscore v1.2.1.2 I am attempting to override the "listen to this device" checkbox property value of the recording device

    private void button1_Click(object sender, EventArgs e)
    {
        // Create the MMDeviceEnumerator COM object to interact with audio devices
        var deviceEnumerator = new MMDeviceEnumerator();

        MMDeviceCollection devices = deviceEnumerator.EnumAudioEndpoints(DataFlow.Capture, DeviceState.Active);
        var deviceID = "{xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}";
        foreach (var deviceI in devices)
        {
            deviceID = deviceI.DeviceID;
            break;
        }

        // GetDevice using the device id
        var device = deviceEnumerator.GetDevice(deviceID);

        // Open the PropertyStore
        var propertyStore = device.PropertyStore;
        
        // Define required GUID and PID
        var checkBoxGuid = new Guid("{24DBB0FC-9311-4B3D-9CF0-18FF155639D4}");
        var checkBoxPid = 1;

        // Go through properties
        foreach (var pro in propertyStore)
        {
            var key = pro.Key;
            if (key.PropertyID != checkBoxPid)
                continue;

            if (key.ID != checkBoxGuid)
                continue;

            var val = pro.Value;
            val.BoolValue = !val.BoolValue;

            /*var val2 = new PropertyVariant();
            val2.DataType = VarEnum.VT_BOOL;
            val2.BoolValue = true;
            val2.BoolValue = !val.BoolValue;*/

            // Update the value
            propertyStore.SetValue(key, val);
            break;
        };
    }

I get the exception

CSCore.Win32.Win32ComException: 'IPropertyStore::SetValue caused an error: 0x80070005, "Access is denied.".'

in any mode (release, debug) and with Admin rights.

is there anything apparent missing?