Terminating a process

This is not direct related to TC but any help would appreciate...



Im testing a windows application written with Delphi .

Some times when close the application it dissapear from desck top but still running in back ground fading away.

hence if re-loggon I used   ....(Sys.WaitProcess("Application", 100).Exists)

Sys.Process("Application").Terminate();...

which returns ......Access is denied..........

I'm running TC as admin in windows 8



 1) Does it mean a problem in application to take long time to terminate process?

 2)  Why dose it says Access denied..