TerminateProcess doesnt work for verified process id

Question

I am working on application that is supposed to kill a process with a given name. Operating system I use is windows 7. The thing is that for all processes listed in task manager with a non-blank USER NAME field it works fine. However when a process has an empty username cannot be killed even by task manager.

Can anyone tell me why some processes has no user name. In my case it is csrss.exe winlogon.exe and unfortunately an old application I want to have killed. All other processes I examined has a proper username.

Is there any way to add a username to existing process ?

Can anybody recomend me better solution killing for killing application than terminateProcess() ?

Answer 1

Those process cannot be terminated because you have no priviledges to do so. You would have to execute your application with elevated priviledges for it to work. There is no other way.