. net检测应用程序启动

我目前正试图监控应用程序的启动和关闭，下面是我当前的代码，但每当它被执行时，我都会收到一个访问拒绝错误，任何深入的想法或原因，为什么会发生这种情况，将非常感谢

    class Program
        {
            static void Main(string[] args)
            {
                ManagementScope scope = new ManagementScope("root''CIMV2");
                scope.Options.EnablePrivileges = true;
                try
                    {
                        ManagementEventWatcher startWatch = new ManagementEventWatcher(
                            new WqlEventQuery("SELECT * FROM Win32_ProcessStartTrace"));
                        startWatch.EventArrived += new EventArrivedEventHandler(startWatch_EventArrived);
                        startWatch.Start();
                        ManagementEventWatcher stopWatch = new ManagementEventWatcher(
                        new WqlEventQuery("SELECT * FROM Win32_ProcessStopTrace"));
                        stopWatch.EventArrived += new EventArrivedEventHandler(stopWatch_EventArrived);
                        stopWatch.Start();
                        Console.WriteLine("Press any key to exit");
                        while (!Console.KeyAvailable) System.Threading.Thread.Sleep(50);
                        startWatch.Stop();
                        stopWatch.Stop();
                    }
                catch (ManagementException e)
                    {
                        Console.WriteLine(e);
                        Console.ReadKey();
                    }
            }
            static void stopWatch_EventArrived(object sender, EventArrivedEventArgs e) 
{
        Console.WriteLine("Process stopped: {0}", e.NewEvent.Properties["ProcessName"].Value);
      }
      static void startWatch_EventArrived(object sender, EventArrivedEventArgs e) 
{
        Console.WriteLine("Process started: {0}", e.NewEvent.Properties["ProcessName"].Value);
      }
            }