Use IMbnDeviceServicesContext.GetDeviceService(), but get error code 0x80070032

Question

When I use IMbnDeviceServicesContext.GetDeviceService() to get basic connect uuid has error, the error code is 

"Unexpected exception occurred: System.Runtime.InteropServices.COMException (0x80070032)".

How can I solve this problem?

try
{
    uint requestId = 0;

    IMbnDeviceService deviceService;

    //UUID_BASIC_CONNECT {A289CC33-BCBB-8B4F-B6B0-133EC2AAE6DF}
    deviceService = m_MbnDeviceServicesContext.GetDeviceService("{A289CC33-BCBB-8B4F-B6B0-133EC2AAE6DF}");
    // Open Commands Session
    deviceService.OpenCommandSession(out requestId);

    //deviceService.QuerySupportedCommands(out requestId);
    rootPage.NotifyUser(deviceServicesOutputStr, NotifyType.StatusMessage);
}