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GUI compiled application will not shown when started as "Scheduled task" with SYSTEM account

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Hello at all,


I try to start a compiled GUI application during an installation that runs as local "SYSTEM" account.

On normal use it works and the GUI comes up.

Then I'm creating in Scheduled tasks a new task which runs as "NT SYSTEM" account, the applications starts, but no GUI will shown on current logged on user.

Here an example of my code:

#Region ;**** Directives created by AutoIt3Wrapper_GUI ****
#EndRegion ;**** Directives created by AutoIt3Wrapper_GUI ****
#include <GUIConstantsEx.au3>
#include <WindowsConstants.au3>


Func Info_Encryption()
    Local $widthCell, $msg, $iOldOpt

    GUICreate("Test...", 655, 475, -1, -1, BitOR($WS_MINIMIZEBOX, $WS_SYSMENU), $WS_EX_TOPMOST) ; alternativ zu $WS_CAPTION auch $WS_MINIMIZEBOX

    SoundPlay(@WindowsDir & "\media\Windows Balloon.wav", 1)

    $iOldOpt = Opt("GUICoordMode", 2)

    $widthCell = 800 ; GUICtrlCreateLabel maximale Länge vom textfeld
    $font = "Verdana" ; Schriftart definiert
    GUISetFont(12, 800, $font) ; Schrift-Größe, Dicke und Art aktiviert
    GUICtrlCreateLabel("Test1", 20, 20, $widthCell)
    GUICtrlCreateLabel("''Test2''.", -1, 0, $widthCell)
    GUICtrlCreateLabel("Test3", -1, 0, $widthCell)
    GUICtrlCreateLabel("Test4", -1, 0, $widthCell)

    $cDummy = GUICtrlCreateDummy()
    Local $aAcc[1][2] = [["^{NUMPADMULT}", $cDummy]]

    GUISetState() ; Zeigt eine leere Dialogbox an

    TraySetToolTip ("Test...")
    TrayTip ("Line 1", "Line 2", 15, 1)
    AutoItSetOption ("TrayMenuMode", 1)

        Until GUIGetMsg() = $cDummy

    ;GUI starten, bis der Dialog beendet wird
    ;Ohne verhindern von Schließen via ALT + F4 bzw. STRG + PAUSE
    ;    $msg = GUIGetMsg()
    ;Until $msg = $GUI_EVENT_CLOSE

    $iOldOpt = Opt("GUICoordMode", $iOldOpt)
EndFunc   ;==>Example


How can I show the GUI by using Windows SYSTEM account?


Thanks a lot

Kind regards


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can't, the SYSTEM account does not have access to the desktop.  if you want to see it, it has to be launched as the user.


  • Like 1

hmm... I guess I have to have a signature...

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Thanks at all for feedback.
Sorry for late reply.

@BigDaddyO Yes, that's correct.

I resolved that problem by importing and starting a Scheduled Task and defined as user "predefined\Users", after that I delete directly the task => the message box still running.
If a User is logged on, it is also member of this group and in facts the user gets the message box. And if no one is logged on I don't care about that :)
Group ID of "predefined\Users" is: S-1-5-32-545
More information about groups:

A Sample of a scheduled Task I've attached.
Import/Create task: SCHTASKS /CREATE /XML Scheduled_Task_Config.xml /TN "GUI_Application.exe" 2>&1
Start task: SCHTASKS /RUN /TN "GUI_Application.exe" 2>&1
Wait 5 seconds: PING -n 6 >NUL 2>NUL
Delete task: SCHTASKS /DELETE /TN "GUI_Application.exe" 2>&1

If GUI Application is not required any more (e.g. installation finished), simply kill the application with all its sub-processes.
TASKKILL /IM "GUI_Application.exe" /T /F 2>&1

Maybe this is helpful for one or other :)

Kind regards


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