Terminate Process fails from scheduled task

[Gary Stebbins]

I have a simple WMI script that I would like to run from a scheduled task.
It checks to see if a particular process is active, and if so, terminates
it. I can run it remotely and it works fine. I can also run it locally from
a CMD window, and it works. The scheduled task was created by a user with
local admin privileges. When run from the scheduled task,
objProcess.Terminate returns 2, "Access denied". Why? How can I get it to
work?

Here is the script:

On Error Resume Next

Dim strComputer
Dim objWMIService
Dim colProcesses
Dim objProcess
Dim intReturn

strComputer = "sfx0000744su"
Const wbemFlagReturnImmediately = &h10
Const wbemFlagForwardOnly = &h20

Set objWMIService = GetObject("winmgmts:{impersonationLevel=impersonate," _
& "authenticationLevel=pktPrivacy}!\\" & strComputer & "\root\CIMV2")
Set colProcesses = objWMIService.ExecQuery("SELECT * FROM Win32_Process _
WHERE Name = 'mytask.exe'", "WQL", _
wbemFlagReturnImmediately + wbemFlagForwardOnly)
For Each objProcess In colProcesses
WScript.Echo objProcess.Name
intReturn = objProcess.Terminate
WScript.Echo "objProcess.Terminate returned value: " & intReturn
Next