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VBScript and Task Scheduler 2.0 : Creating Scheduled Tasks

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This article is the result of a quest to better understand Task Scheduler 2.0 and all the newer objects available in vbscript in this version over  the limited options we had scripting in Task Scheduler 1.0.  As I started my journey of knowledge I found some decent references for the objects on msdn, but could not find very many good sample scripts.  There were bits and pieces that told me how to do a few things, but a full picture was not readily available.  I decide to build my own full sample script so that I could reference it in the future.  I started by just building a script to return all the data from already scheduled tasks (see my article at http://rdsrc.us/vVxA6N for that script).  My next task was to build a script that could create all the options available for a new task.  I found that objects available actually presented more options for creating a task than one even has using the GUI.  These objects are pretty powerful and nice to use.  As a programmer, I found I had way more options than in task scheduler 1.0 and could do numerous items.  There were a couple objects that appear they are only available for the new C++ interface and therefore I have left those out.

Below is my script that will set up a task with all the different trigger options and all the different action options.  You can take this script and remove the pieces you don't need to create you own script to schedule your task.  I have put links to the msdn references in the comments of the code where appropriate.

Please note that some options will require the script to be run in an elevated mode.  As Task Scheduler 2.0 was introduced with Vista, this script will only work on new operating systems like Windows 7 and Windows Server 2008.

'---------------------------------------------------------
' This sample shows how to set the various task objects
' for creating a new scheduled task in Task Scheduler 2.0
'
' An alternative would be to to build the XML and create the t
' task with the .RegisterTask method 
' - See http://msdn.microsoft.com/en-us/library/windows/desktop/aa382575%28v=vs.85%29.aspx
'---------------------------------------------------------

' -------------------------------------------------------------------------------
' Define the Available Enumerations that can be used
' Since VBScript does not offer enumeration, we have to set these all as constants
' For all enumeration documentation see - http://msdn.microsoft.com/en-us/library/windows/desktop/aa383602%28v=vs.85%29.aspx

 Option Explicit

'  TASK_ACTION_TYPE
Const TASK_ACTION_EXEC = 0
Const TASK_ACTION_COM_HANDLER = 5
Const TASK_ACTION_SEND_EMAIL = 6
Const TASK_ACTION_SHOW_MESSAGE = 7

' TASK_COMPATIBILITY
Const TASK_COMPATIBILITY_AT = 0
Const TASK_COMPATIBILITY_V1 = 1
Const TASK_COMPATIBILITY_V2 = 2

' TASK_CREATION
Const TASK_VALIDATE_ONLY = &H01&
Const TASK_CREATE = &H02&
Const TASK_UPDATE = &H04&
Const TASK_CREATE_OR_UPDATE = &H06&
Const TASK_DISABLE = &H08&
Const TASK_DONT_ADD_PRINCIPAL_ACE = &H10&
Const TASK_IGNORE_REGISTRATION_TRIGGERS = &H20&

' TASK_INSTANCES_POLICY
Const TASK_INSTANCES_PARALLEL = 0
Const TASK_INSTANCES_QUEUE = 1
Const TASK_INSTANCES_IGNORE_NEW = 2
Const TASK_INSTANCES_STOP_EXISTING = 3

' TASK_LOGON_TYPE
Const TASK_LOGON_NONE = 0
Const TASK_LOGON_PASSWORD = 1
Const TASK_LOGON_S4U = 2
Const TASK_LOGON_INTERACTIVE_TOKEN = 3
Const TASK_LOGON_GROUP = 4
Const TASK_LOGON_SERVICE_ACCOUNT = 5
Const TASK_LOGON_INTERACTIVE_TOKEN_OR_PASSWORD = 6

' TASK_RUNLEVEL_TYPE
Const TASK_RUNLEVEL_LUA = 0
Const TASK_RUNLEVEL_HIGHEST = 1

' TASK_TRIGGER_TYPE2
Const TASK_TRIGGER_EVENT = 0
Const TASK_TRIGGER_TIME  = 1
Const TASK_TRIGGER_DAILY = 2
Const TASK_TRIGGER_WEEKLY = 3
Const TASK_TRIGGER_MONTHLY = 4
Const TASK_TRIGGER_MONTHLYDOW = 5
Const TASK_TRIGGER_IDLE = 6
Const TASK_TRIGGER_REGISTRATION = 7
Const TASK_TRIGGER_BOOT = 8
Const TASK_TRIGGER_LOGON = 9
Const TASK_TRIGGER_SESSION_STATE_CHANGE = 11
' -------------------------------------------------------------------------------

Dim objTaskService, objRootFolder, objTaskFolder, objNewTaskDefinition
Dim objTaskTrigger, objTaskAction, objTaskTriggers, blnFoundTask
Dim objTaskFolders

' Create the TaskService object and connect
Set objTaskService = CreateObject("Schedule.Service")
call objTaskService.Connect()

' Get the Root Folder where we will place this task
Set objTaskFolder = objTaskService.GetFolder("\")
' Or create a folder and use it.  I would first check if it exists.
' If it does exist CreateFolder will generate an error.  
' You have to loop through the folders to find the one you want
Set objRootFolder = objTaskService.GetFolder("\")

' Get all the sub folders and see if the one one want exists
Set objTaskFolders = objRootFolder.GetFolders(0)
    
For Each objTaskFolder In objTaskFolders
	If objTaskFolder.Path = "\MyNewTaskFolder" Then
		blnFoundTask = True
		Exit For
	End If
Next
    
If Not blnFoundTask Then Set objTaskFolder = objRootFolder.CreateFolder("\MyNewTaskFolder")
 
' -------------------------------------------------------------------------------
' Start Creation of the Task Definition
' -------------------------------------------------------------------------------
' The flags parameter is 0 because it is not used and reserved for future use
' http://msdn.microsoft.com/en-us/library/windows/desktop/aa383470%28v=vs.85%29.aspx
Set objNewTaskDefinition = objTaskService.NewTask(0) 

With objNewTaskDefinition
	' Text that is associated with the task. This data is ignored by the Task Scheduler 
	' service, but is used by third-parties who wish to extend the task format.
	.Data = "This is my sample task via script" 

	' -------------------------------------------------------------------------------
	' Set the values for the registration information - General Tab Top Section
	' -------------------------------------------------------------------------------
	'http://msdn.microsoft.com/en-us/library/windows/desktop/aa382100%28v=vs.85%29.aspx
	With .RegistrationInfo
		.Author = "Name or Process Creating Task"
		' or
		' .Author = objTaskService.ConnectedDomain  & "\" & objTaskService.ConnectedUser 
		.Date = ConvertTime(now())
		.Description = "Description of What this task does"
		.Documentation  = "My Document" ' See - http://msdn.microsoft.com/en-us/library/windows/desktop/aa382104%28v=vs.85%29.aspx
		' .SecurityDescriptor ' http://msdn.microsoft.com/en-us/library/windows/desktop/aa379567%28v=vs.85%29.aspx
		.Source = "VB Script"
		.URI = "http://mysite.com"	' Not Shown in GUI
		.Version = "1.0" ' Self defined version of this scheduled task. Not Shown in GUI
	End With 'objRegistrationInfo

	' -------------------------------------------------------------------------------
	' Set the values for the General Tab Security Section
	' -------------------------------------------------------------------------------
	' http://msdn.microsoft.com/en-us/library/windows/desktop/aa382071%28v=vs.85%29.aspx
	With .Principal
		.Id = "My ID" 	' Not shown in GUI
		.DisplayName = "Principal Description" ' Not Shown in GUI
		.UserId = "Domain\myuser"	' This script must be run with elevated privileges if this is not the current user.
		' or 
		.UserId = objTaskService.ConnectedDomain  & "\" & objTaskService.ConnectedUser 
		'.GroupId = "" ' The identifier of the user group that is associated with this principal. Do not set this property if a user identifier is specified in the UserId property.
		.LogonType = TASK_LOGON_INTERACTIVE_TOKEN	' TASK_LOGON_TYPE
		.RunLevel = TASK_RUNLEVEL_LUA ' TASK_RUNLEVEL_TYPE - If you use Highest Privilege, the script will need to run elevated.
	End With 'objPrincipal

	' -------------------------------------------------------------------------------
	' Set Triggers Tab - Examples of the different Types of Triggers
	' -------------------------------------------------------------------------------
	' http://msdn.microsoft.com/en-us/library/windows/desktop/aa383868%28v=vs.85%29.aspx
	Set objTaskTriggers = .Triggers
	' *** Event Trigger ***  ---  http://msdn.microsoft.com/en-us/library/windows/desktop/aa446882%28v=vs.85%29.aspx
	Set objTaskTrigger = objTaskTriggers.Create(TASK_TRIGGER_EVENT)
	With objTaskTrigger
		.Enabled = True
		.Id = "EventTriggerID1"
		' Time Format  YYYY-MM-DDTHH:MM:SS or use ConvertTime Format 
		'.StartBoundary = "2013-07-01T08:08:00"
		'.EndBoundary = "2013-07-01T08:08:00"
		.StartBoundary = ConvertTime(DateAdd("h", 1, now()))
		.EndBoundary = ConvertTime(DateAdd("h", 3, now()))
		' Stop Task if it runs longer than . . 
		' Format For Days = P#D where # is the number of days
		' Format for Time = PT#[HMS] Where # is the duration and H for hours, M for minutes, S for seconds
		.ExecutionTimeLimit = "PT1M"
		.Delay = "PT5M"
		
		' Need to build Event Subscription XML.  This xml can 
		' be very complicated and I could not find documentation
		' I recommend you set up a task with a custom event trigger
		' On the custom trigger screen click on the XML tab and copy
		' that xml document here to create your trigger.  Change all the 
		' qoute marks (") to single tick marks (') in the copied xml
		.Subscription  = "<QueryList>" _ 
				& "<Query Id='0' Path='MyTest'>" _
				& "<Select Path='Application'>*[System[Provider[@Name='FedExAdminService'] and (Level=1  or Level=2 or Level=3 or Level=4 or Level=0 or Level=5)]]</Select>" _
				& "</Query>" _
				& "</QueryList>"

		With .Repetition
			' Format For Days = P#D where # is the number of days
			' Format for Time = PT#[HMS] Where # is the duration and H for hours, M for minutes, S for seconds
			.Duration = "P1D"
			.Interval = "PT1H"
			.StopAtDurationEnd = True
		End With 'objTaskRepitition
	End With

	' *** Time Trigger ***  ---  http://msdn.microsoft.com/en-us/library/windows/desktop/aa383622%28v=vs.85%29.aspx
	Set objTaskTrigger = objTaskTriggers.Create(TASK_TRIGGER_TIME)
	With objTaskTrigger
		.Enabled = True
		.Id = "TimeTriggerID1"
		' Time Format  YYYY-MM-DDTHH:MM:SS or use ConvertTime Format 
		'.StartBoundary = "2013-07-01T08:08:00"
		'.EndBoundary = "2013-07-01T08:08:00"
		.StartBoundary = ConvertTime(DateAdd("h", 1, now()))
		.EndBoundary = ConvertTime(DateAdd("h", 3, now()))
		' Stop Task if it runs longer than . . 
		' Format For Days = P#D where # is the number of days
		' Format for Time = PT#[HMS] Where # is the duration and H for hours, M for minutes, S for seconds
		.ExecutionTimeLimit = "PT1M"

		With .Repetition
			' Format For Days = P#D where # is the number of days
			' Format for Time = PT#[HMS] Where # is the duration and H for hours, M for minutes, S for seconds
			.Duration = "P1D"
			.Interval = "PT1H"
			.StopAtDurationEnd = True
		End With 'objTaskRepitition
	End With

	' *** Daily Trigger ***  ---  http://msdn.microsoft.com/en-us/library/windows/desktop/aa446858%28v=vs.85%29.aspx
	Set objTaskTrigger = objTaskTriggers.Create(TASK_TRIGGER_DAILY)
	With objTaskTrigger
		.Enabled = True
		.Id = "DailyTriggerID1"
		' Time Format  YYYY-MM-DDTHH:MM:SS or use ConvertTime Format 
		'.StartBoundary = "2013-07-01T08:08:00"
		'.EndBoundary = "2013-07-01T08:08:00"
		.StartBoundary = ConvertTime(DateAdd("h", 1, now()))
		.EndBoundary = ConvertTime(DateAdd("h", 3, now()))
		' Stop Task if it runs longer than . . 
		' Format For Days = P#D where # is the number of days
		' Format for Time = PT#[HMS] Where # is the duration and H for hours, M for minutes, S for seconds
		.ExecutionTimeLimit = "PT1M"
		.DaysInterval = 3	' Recur every x number of days

		With .Repetition
			' Format For Days = P#D where # is the number of days
			' Format for Time = PT#[HMS] Where # is the duration and H for hours, M for minutes, S for seconds
			.Duration = "P1D"
			.Interval = "PT1H"
			.StopAtDurationEnd = True
		End With 'objTaskRepitition
	End With
	
	' *** Weekly Trigger ***  ---  http://msdn.microsoft.com/en-us/library/windows/desktop/aa384019%28v=vs.85%29.aspx
	Set objTaskTrigger = objTaskTriggers.Create(TASK_TRIGGER_WEEKLY)
	With objTaskTrigger
		.Enabled = True
		.Id = "WeeklyTriggerID1"
		' Time Format  YYYY-MM-DDTHH:MM:SS or use ConvertTime Format 
		'.StartBoundary = "2013-07-01T08:08:00"
		'.EndBoundary = "2013-07-01T08:08:00"
		.StartBoundary = ConvertTime(DateAdd("h", 1, now()))
		.EndBoundary = ConvertTime(DateAdd("h", 3, now()))
		' Stop Task if it runs longer than . . 
		' Format For Days = P#D where # is the number of days
		' Format for Time = PT#[HMS] Where # is the duration and H for hours, M for minutes, S for seconds
		.ExecutionTimeLimit = "PT1M"
		' Days of Week is a Bit Flag.  http://msdn.microsoft.com/en-us/library/windows/desktop/aa384024%28v=vs.85%29.aspx
		' Options:
		' 1 = Sunday
		' 2 = Monday
		' 4 = Tuesday
		' 8 = Wednesday
		' 16 = Thursday
		' 32 = Friday
		' 64 = Saturday
		.DaysOfWeek = 28 ' 28 = Tuesday, Wednesday & Thursday
		.WeeksInterval = 2 ' Recur every x number of weeks
	
		With .Repetition
			' Format For Days = P#D where # is the number of days
			' Format for Time = PT#[HMS] Where # is the duration and H for hours, M for minutes, S for seconds
			.Duration = "P1D"
			.Interval = "PT1H"
			.StopAtDurationEnd = True
		End With 'objTaskRepitition	
	End With

	' *** Monthly Trigger ***  ---  http://msdn.microsoft.com/en-us/library/windows/desktop/aa382062%28v=vs.85%29.aspx
	Set objTaskTrigger = objTaskTriggers.Create(TASK_TRIGGER_MONTHLY)
	With objTaskTrigger
		.Enabled = True
		.Id = "MonthlyTriggerID1"
		' Time Format  YYYY-MM-DDTHH:MM:SS or use ConvertTime Format 
		'.StartBoundary = "2013-07-01T08:08:00"
		'.EndBoundary = "2013-07-01T08:08:00"
		.StartBoundary = ConvertTime(DateAdd("h", 1, now()))
		.EndBoundary = ConvertTime(DateAdd("h", 3, now()))
		' Stop Task if it runs longer than . . 
		' Format For Days = P#D where # is the number of days
		' Format for Time = PT#[HMS] Where # is the duration and H for hours, M for minutes, S for seconds
		.ExecutionTimeLimit = "PT1M"
		' Days of Month is a bit Flag -- http://msdn.microsoft.com/en-us/library/windows/desktop/aa382063%28v=vs.85%29.aspx
		' Day 1 =  &H01&, 2 =  &H02&, 3 =  &H04&, . . . . 31 =  &H40000000&
		.DaysOfMonth = &h01& + &h04& + &h40& + &H40000000&  ' 1st day, 3rd day, 7th day and 31st Day
		.RunOnLastDayOfMonth = True ' Flag for if this should run on the last day of the scheduled months  
		' Months of the year is a bit flag -- http://msdn.microsoft.com/en-us/library/windows/desktop/aa382064%28v=vs.85%29.aspx
		' January = 1, February = 2, March = 4, April = 8, May = 16, June = 32, July = 64, August = 128
		' September = 256, October = 512, November = 1024, December = 2048
		.MonthsOfYear = 1045 ' January, March, May, November
		' Randomly delay the start of the task
		' Format For Days = P#D where # is the number of days
		' Format for Time = PT#[HMS] Where # is the duration and H for hours, M for minutes, S for seconds
		.RandomDelay = "PT4H"	' Randomly Delay for 4 Hours
	
		With .Repetition
			' Format For Days = P#D where # is the number of days
			' Format for Time = PT#[HMS] Where # is the duration and H for hours, M for minutes, S for seconds
			.Duration = "P1D"
			.Interval = "PT1H"
			.StopAtDurationEnd = True
		End With 'objTaskRepitition	
	End With

	' *** Monthly Day of Week Trigger ***  ---  
	Set objTaskTrigger = objTaskTriggers.Create(TASK_TRIGGER_MONTHLYDOW)
	With objTaskTrigger
		.Enabled = True
		.Id = "Monthly DayOfMonth TriggerID1"
		' Time Format  YYYY-MM-DDTHH:MM:SS or use ConvertTime Format 
		'.StartBoundary = "2013-07-01T08:08:00"
		'.EndBoundary = "2013-07-01T08:08:00"
		.StartBoundary = ConvertTime(DateAdd("h", 1, now()))
		.EndBoundary = ConvertTime(DateAdd("h", 3, now()))
		' Stop Task if it runs longer than . . 
		' Format For Days = P#D where # is the number of days
		' Format for Time = PT#[HMS] Where # is the duration and H for hours, M for minutes, S for seconds
		.ExecutionTimeLimit = "PT1M"
		' Days of Week is a Bit Flag.  http://msdn.microsoft.com/en-us/library/windows/desktop/aa384024%28v=vs.85%29.aspx
		' Options:
		' 1 = Sunday
		' 2 = Monday
		' 4 = Tuesday
		' 8 = Wednesday
		' 16 = Thursday
		' 32 = Friday
		' 64 = Saturday
		.DaysOfWeek = 28 ' 28 = Tuesday, Wednesday & Thursday
		' Weeks of The Month is a bit flag.   http://msdn.microsoft.com/en-us/library/windows/desktop/aa382061%28v=vs.85%29.aspx
		' First Week = 1, Second Week = 2, Third Week = 4, Fourth Week = 8 
		.WeeksOfMonth = 9 ' Run on 1st and 4th weeks of month
		.RunOnLastWeekOfMonth  = True 
		' Months of the year is a bit flag -- http://msdn.microsoft.com/en-us/library/windows/desktop/aa382064%28v=vs.85%29.aspx
		' January = 1, February = 2, March = 4, April = 8, May = 16, June = 32, July = 64, August = 128
		' September = 256, October = 512, November = 1024, December = 2048
		.MonthsOfYear = 1045 ' January, March, May, November
		' Randomly delay the start of the task
		' Format For Days = P#D where # is the number of days
		' Format for Time = PT#[HMS] Where # is the duration and H for hours, M for minutes, S for seconds
		.RandomDelay = "PT4H"	' Randomly Delay for 4 Hours
	
		With .Repetition
			' Format For Days = P#D where # is the number of days
			' Format for Time = PT#[HMS] Where # is the duration and H for hours, M for minutes, S for seconds
			.Duration = "P1D"
			.Interval = "PT1H"
			.StopAtDurationEnd = True
		End With 'objTaskRepitition	
	End With

	' *** On Idle Trigger ***  ---  http://msdn.microsoft.com/en-us/library/windows/desktop/aa380690%28v=vs.85%29.aspx
	' Make sure the IDLE Properties are also set for this trigger to work.
	Set objTaskTrigger = objTaskTriggers.Create(TASK_TRIGGER_IDLE)
	With objTaskTrigger
		.Enabled = True
		.Id = "OnIdlleTriggerID1"
		' Time Format  YYYY-MM-DDTHH:MM:SS or use ConvertTime Format 
		'.StartBoundary = "2013-07-01T08:08:00"
		'.EndBoundary = "2013-07-01T08:08:00"
		.StartBoundary = ConvertTime(DateAdd("h", 1, now()))
		.EndBoundary = ConvertTime(DateAdd("h", 3, now()))
		' Stop Task if it runs longer than . . 
		' Format For Days = P#D where # is the number of days
		' Format for Time = PT#[HMS] Where # is the duration and H for hours, M for minutes, S for seconds
		.ExecutionTimeLimit = "PT1M"
	
		With .Repetition
			' Format For Days = P#D where # is the number of days
			' Format for Time = PT#[HMS] Where # is the duration and H for hours, M for minutes, S for seconds
			.Duration = "P1D"
			.Interval = "PT1H"
			.StopAtDurationEnd = True
		End With 'objTaskRepitition	
	End With

	' *** On Task Creation/Modification ***  ---  http://msdn.microsoft.com/en-us/library/windows/desktop/aa382110%28v=vs.85%29.aspx
	Set objTaskTrigger = objTaskTriggers.Create(TASK_TRIGGER_REGISTRATION)
	With objTaskTrigger
		.Enabled = True
		.Id = "TaskCreateTriggerID1"
		' Time Format  YYYY-MM-DDTHH:MM:SS or use ConvertTime Format 
		'.StartBoundary = "2013-07-01T08:08:00"
		'.EndBoundary = "2013-07-01T08:08:00"
		.StartBoundary = ConvertTime(DateAdd("h", 1, now()))
		.EndBoundary = ConvertTime(DateAdd("h", 3, now()))
		' Stop Task if it runs longer than . . 
		' Format For Days = P#D where # is the number of days
		' Format for Time = PT#[HMS] Where # is the duration and H for hours, M for minutes, S for seconds
		.ExecutionTimeLimit = "PT1M"
		.Delay = "PT45M"
	
		With .Repetition
			' Format For Days = P#D where # is the number of days
			' Format for Time = PT#[HMS] Where # is the duration and H for hours, M for minutes, S for seconds
			.Duration = "P1D"
			.Interval = "PT1H"
			.StopAtDurationEnd = True
		End With 'objTaskRepitition	
	End With

	' *** AT Start Up (Boot) Trigger  ***  ---  http://msdn.microsoft.com/en-us/library/windows/desktop/aa446815%28v=vs.85%29.aspx
	Set objTaskTrigger = objTaskTriggers.Create(TASK_TRIGGER_BOOT)
	With objTaskTrigger
		.Enabled = True
		.Id = "BootTriggerID1"
		' Time Format  YYYY-MM-DDTHH:MM:SS or use ConvertTime Format 
		'.StartBoundary = "2013-07-01T08:08:00"
		'.EndBoundary = "2013-07-01T08:08:00"
		.StartBoundary = ConvertTime(DateAdd("h", 1, now()))
		.EndBoundary = ConvertTime(DateAdd("h", 3, now()))
		' Stop Task if it runs longer than . . 
		' Format For Days = P#D where # is the number of days
		' Format for Time = PT#[HMS] Where # is the duration and H for hours, M for minutes, S for seconds
		.ExecutionTimeLimit = "PT1M"
		.Delay = "PT45M"
	
		With .Repetition
			' Format For Days = P#D where # is the number of days
			' Format for Time = PT#[HMS] Where # is the duration and H for hours, M for minutes, S for seconds
			.Duration = "P1D"
			.Interval = "PT1H"
			.StopAtDurationEnd = True
		End With 'objTaskRepitition	
	End With

	' *** At Log on Trigger ***  ---  http://msdn.microsoft.com/en-us/library/windows/desktop/aa381908%28v=vs.85%29.aspx
	Set objTaskTrigger = objTaskTriggers.Create(TASK_TRIGGER_LOGON)
	With objTaskTrigger
		.Enabled = True
		.Id = "LogonTriggerID1"
		' Time Format  YYYY-MM-DDTHH:MM:SS or use ConvertTime Format 
		'.StartBoundary = "2013-07-01T08:08:00"
		'.EndBoundary = "2013-07-01T08:08:00"
		.StartBoundary = ConvertTime(DateAdd("h", 1, now()))
		.EndBoundary = ConvertTime(DateAdd("h", 3, now()))
		' Stop Task if it runs longer than . . 
		' Format For Days = P#D where # is the number of days
		' Format for Time = PT#[HMS] Where # is the duration and H for hours, M for minutes, S for seconds
		.ExecutionTimeLimit = "PT1M"
		.Delay = "PT45M"
		' For User ID - comment out to leave for any user.  
		' This script must be run with elevated privileges if this is not the current user or if not used!
		.UserId = "Domain\myuser"	
		' or 
		.UserId = objTaskService.ConnectedDomain  & "\" & objTaskService.ConnectedUser 
	
		With .Repetition
			' Format For Days = P#D where # is the number of days
			' Format for Time = PT#[HMS] Where # is the duration and H for hours, M for minutes, S for seconds
			.Duration = "P1D"
			.Interval = "PT1H"
			.StopAtDurationEnd = True
		End With 'objTaskRepitition	
	End With

	' *** Session State Change Trigger  ***  ---  http://msdn.microsoft.com/en-us/library/windows/desktop/aa382142%28v=vs.85%29.aspx
	Set objTaskTrigger = objTaskTriggers.Create(TASK_TRIGGER_SESSION_STATE_CHANGE)
	With objTaskTrigger
		.Enabled = True
		.Id = "Session State Changed TriggerID1"
		' Time Format  YYYY-MM-DDTHH:MM:SS or use ConvertTime Format 
		'.StartBoundary = "2013-07-01T08:08:00"
		'.EndBoundary = "2013-07-01T08:08:00"
		.StartBoundary = ConvertTime(DateAdd("h", 1, now()))
		.EndBoundary = ConvertTime(DateAdd("h", 3, now()))
		' Stop Task if it runs longer than . . 
		' Format For Days = P#D where # is the number of days
		' Format for Time = PT#[HMS] Where # is the duration and H for hours, M for minutes, S for seconds
		.ExecutionTimeLimit = "PT1M"
		.Delay = "PT45M"
		' For User ID - comment out to leave for any user.  
		' This script must be run with elevated privileges if this is not the current user or if not used!
		.UserId = "Domain\myuser"	
		' or 
		.UserId = objTaskService.ConnectedDomain  & "\" & objTaskService.ConnectedUser 
		' State Change Event - http://msdn.microsoft.com/en-us/library/windows/desktop/aa382144%28v=vs.85%29.aspx
		' User Session Connect to Local Computer = 1
		' User Session Disconnect from Local Computer = 2
		' User Session Connect to Remote Computer = 3
		' User Session Disconnect from Remote Computer = 4
		' On Workstation Lock = 7
		' On Workstation Unlock = 8
		.StateChange = 7
	
		With .Repetition
			' Format For Days = P#D where # is the number of days
			' Format for Time = PT#[HMS] Where # is the duration and H for hours, M for minutes, S for seconds
			.Duration = "PT1H"
			.Interval = "PT1M"
			.StopAtDurationEnd = False
		End With 'objTaskRepitition	
	End With

	' -------------------------------------------------------------------------------
	' Set Value for Actions Tab - Examples of the different types of actions
	' -------------------------------------------------------------------------------
	' *** Execute / Command Line Action  ***  ---  http://msdn.microsoft.com/en-us/library/windows/desktop/aa446890%28v=vs.85%29.aspx
	Set objTaskAction = .Actions.Create(TASK_ACTION_EXEC)
	With objTaskAction
		.Id = "ExecuteAction Sample"
		' File Path and Name to run or command line to execute
		.Path = "C:\Windows\System32\notepad.exe"
		.Arguments = WScript.ScriptFullName  
		.WorkingDirectory = "C:\Windows\System32"
	End With

	' *** Email Message Action  ***  ---  http://msdn.microsoft.com/en-us/library/windows/desktop/aa446868%28v=vs.85%29.aspx
	Set objTaskAction = .Actions.Create(TASK_ACTION_SEND_EMAIL)
	With objTaskAction
		.Id = "Email Message Sample"
		.From = "sender.email@abc.com"
		.ReplyTo = "replyto.email@abc.com"
		.To = "recipient.email@abc.com"
		.Cc = "ReceiveCopy.email@abc.com"
		.Bcc = "ReceiveBlindCopy.email@abc.com"
		.subject = "Test Email from Task Scheduler"
		.Body = "All the Text that you want to have in the email."
		.Server = "SMTP_Server _Name"
		Dim objAttachments(1)	' Array of Attachments - Zero Based
		objAttachments(0) = WScript.ScriptFullName
		objAttachments(1) = "C:\Windows\Win.ini"
		.Attachments = objAttachments
		
		' Create a custom Header Field and value for your email.
		' I could not get this to work.  It stores in the XML properly
		' but task scheduler cannot open it and I had to manually delete from 
		' the tasks folder in System32
		'Dim objHeaderPair
		'objHeaderPair = .HeaderFields.Create
		'objHeaderPair.Name = "TestHeaderName"
		'objHeaderPair.Value = "TestHeaderValue"
		'.HeaderFields = objHeaderPair
	End With

	' *** Show a Message Box Action  ***  ---  http://msdn.microsoft.com/en-us/library/windows/desktop/aa382149%28v=vs.85%29.aspx
	Set objTaskAction = .Actions.Create(TASK_ACTION_SHOW_MESSAGE)
	With objTaskAction
		.Id = "Show a Message Sample"
		.Title = "Title for Message Box"
		.MessageBody = "Text in the Message Box"
	End With

	' -------------------------------------------------------------------------------
	' Set Values for Conditions and Settings Tabs
	' -------------------------------------------------------------------------------
	'http://msdn.microsoft.com/en-us/library/windows/desktop/aa383480%28v=vs.85%29.aspx
	With .Settings
		.Enabled = True 	' Must be set to two or task will have a status of disabled
		' Compatibility.  A Value of 0 or 1 will greatly restrict what objects can be used.
		' it is recommended that you user a 2 or 3 with this script
		' This value is not required and may be omitted 
		' 0 = Compatible with AT Command
		' 1 = Compatible with Task Scheduler 1.0
		' 2 = Compatible with Task Scheduler 2.0 (Windows Vista / Windows 2008)
		' 3 = Compatible with Task Scheduler 2.0 (Windows 7 / Windows 2008 R2) - this is not listed in the documentation
		.Compatibility = 2
		' Optional to Set Priority Level.  Can be omitted (recommended)
		' 0 = High / 10 = Low.  Setting not visible in GUI
		.Priority = 5
	
		' -------------------------------------------------------------------------------
		' General Tab
		' -------------------------------------------------------------------------------
		.Hidden = False ' If you mark this as hidden then you must have View >> Show Hidden Tasks enabled to see it 

		' -------------------------------------------------------------------------------
		' Conditions Tab
		' -------------------------------------------------------------------------------
		' Idle Section
		' Format For Days = P#D where # is the number of days
		' Format for Time = PT#[HMS] Where # is the duration and H for hours, M for minutes, S for seconds
		.RunOnlyIfIdle = True		' Run this task only if the computer has been idle for selected period of time
		'http://msdn.microsoft.com/en-us/library/windows/desktop/aa380669%28v=vs.85%29.aspx
		With .IdleSettings 
			.IdleDuration = "PT2M"  ' Start the task only if computer is idle for selected time
			.StopOnIdleEnd = True	' Stop task if computer ceases to be idle
			.RestartOnIdle = True 	' Restart if the idle state resumes
			.WaitTimeout= "PT2H"	' Time to wait for idle
		End With 'objIdleSettings
		
		' Power Section
		.DisallowStartIfOnBatteries = True ' Start the task only if the computer is on AC Power
		.StopIfGoingOnBatteries = True	' Stop if the computer switches to battery power
		.WakeToRun = False	' Wake the computer to run this task
				
		' Network Section
		.RunOnlyIfNetworkAvailable = False ' Run only if the selected network is available. Must set network settings
		'http://msdn.microsoft.com/en-us/library/windows/desktop/aa382067%28v=vs.85%29.aspx
		'With .NetworkSettings 
		'	.Id = "{}" ' SSID For Network
		'	.Name = "MyNetwork" ' Network Name
		'End With 'objTaskNetworkSettings
		
		' -------------------------------------------------------------------------------
		' Settings Tab
		' -------------------------------------------------------------------------------
		.AllowDemandStart = True ' Allow the Task to Be Run on Demand
		.StartWhenAvailable = True ' Run Task as soon as possible after a scheduled start is missed.
		' Format For Days = P#D where # is the number of days
		' Format for Time = PT#[HMS] Where # is the duration and H for hours, M for minutes, S for seconds
		.RestartInterval = "PT10M"	' If the task fails attempt to restart every x period of Time (Seconds Not Valid for this Object
		.RestartCount = 2	' Attempt to restart x number of times.  Must be set if .RestartInterval is set
		.ExecutionTimeLimit = "PT1H"	' Stop the task if it runs longer than chosen time
		.AllowHardTerminate = False ' If the task does not end when requested, force it to stop
		.DeleteExpiredTaskAfter = "P30D"	' Must have at least one trigger with an expiration date to use this field.
		' Tell the task how to function if the task is initiated again while it is already running
		' 0 = Run a second instance now (Parallel)
		' 1 = Put the new instance in line behind the current running instance (Add To Queue)
		' 2 = Ignore the new request"
		.MultipleInstances = 2

	End With 'objTaskSettings

	' Alternatively you could create the task by creating the full XML document and assigning it to .xml
	'.xml = "<YourProperlyFormatedXMLString/>"
End With ' objNewTaskDefinition
			
' http://msdn.microsoft.com/en-us/library/windows/desktop/aa382577%28v=vs.85%29.aspx

' Register The Task
' 	Path = Name of the scheduled task
'   Definiition = The Task Definition object set above
'	Flags = Task Creation Constants (Bit Flags)
'	userId = The user credentials that are used to register the task. 
'		If present, these credentials take priority over the credentials 
'		specified in the task definition object pointed to by the definition parameter.
'	password = The password for the userId that is used to register the task. When 
'		the TASK_LOGON_SERVICE_ACCOUNT logon type is used, the password must be an 
'		empty VARIANT value such as VT_NULL or VT_EMPTY.
'	logonType = Task Logon Type Constant
'	ssdl = The security descriptor that is associated with the registered task. 
Call objTaskFolder.RegisterTaskDefinition( _
    "SampleTask From VBscript", objNewTaskDefinition, TASK_CREATE_OR_UPDATE, , , _
	TASK_LOGON_INTERACTIVE_TOKEN)

WScript.Echo "Task submitted."

wscript.quit

Function ConvertTime(DateTimeValue)
	' Convert a DateTime value to the format needed by 
	' task scheduler
	' YYYY-MM-DDTHH:MM:SS 
	Dim strTime
	
	strTime = year(DateTimeValue) & "-"
	strTime = strTime & Right("0" & Month(DateTimeValue), 2) & "-"
	strTime = strTime & Right("0" & Day(DateTimeValue), 2) & "T"
	strTime = strTime & Right("0" & Hour(DateTimeValue), 2) & ":"
	strTime = strTime & Right("0" & Minute(DateTimeValue), 2) & ":"
	strTime = strTime & Right("0" & Day(DateTimeValue), 2)
	
	ConvertTime = strTime
End Function

Open in new window



Now for those who are interested here is a more detailed breakdown of the code.


Lines 17-67
First I set up all the enumeration values to make it a little more understandable what the code is doing later on.  These are not required for smaller snippets of the code, but you would need to adapt the code to use the actual value and not the referenced constant.

Lines 75 & 76
Connect to the Task Scheduler 2.0 Service.  You have to run the connect process to actually get access to the task scheduler

Lines 78-95
Connect to the folder in task scheduler where you want this task and the start the creation of the task
This section has a sample on how to connect to an existing folder or to create a folder.  If your script is going
to create a new folder, I suggest checking to see if it exists first.  If you try to create a folder that already exists,
you will receive an error.

Lines 113-124
Set the Hidden Registration Information.  This is only available if you query the tasks via code and helps to identify this task later on.

Note that the Date is optional.  But if you include it, it has to be in the proper format.  This code has a conversion routine (ConvertTime) that takes a date/time object and converts it to a properly formatted string for this object.  [Converstion code is lines 638-652]

Lines 126-139
Set the Values for the General Tab - Security Section.  This helps determine what privileges this task will have and who can run the task.

'----------------------------
Lines 141-490
Set what type of events or situations, which are know as triggers, will cause the task to start.  There are several options and a scheduled task can have more than one trigger and these are shown on the Triggers tab in the GUI.  The example code will set several for the same scheduled task.  
'----------------------------

The repetition section for each trigger sets if the task should be repeatedly run for a section of time once the trigger has fired.  The .Duration property sets for how long the task should repeatedly run.  The .Interval property sets how often the task should fire during that period of time.  If .StopAtDurationEnd is set to true, then all running tasks will be stopped when the allotted time set by .Duration has ended.
With .Repetition
			' Format For Days = P#D where # is the number of days
			' Format for Time = PT#[HMS] Where # is the duration and H for hours, M for minutes, S for seconds
			.Duration = "P1D"
			.Interval = "PT1H"
			.StopAtDurationEnd = True
		End With 'objTaskRepitition

Open in new window

 
Lines 146-181
Event Trigger:  There are several logged Windows Events      that can fire a task.  I suggest looking at all the options in the GUI to determine which scenarios fit.  Also, the settings for this event are a little tricky.  If you create a sample task in the GUI, you can copy the settings very easily into the code.  On the Triggers Tab in the GUI, click New.  Then select "On an Event" in the Begin Task Drop Down.  In the settings box, select custom and click the New Event Filter Button.  Set up the event options and then click on the XML tab.  Copy that text and use it to the build the .subscription string.
      
Lines 183-205
Time Trigger:  This is a one-time trigger that fires based on the set time and day.  It will initiate just once and will repeat until the end of repeat stamp if repitition is set.  

Lines 207-230
Daily Trigger:  This will set to run at a certain time each day.  You can set a start and end date for a period of consecutive days in which this task will run each day.  You can set an interval (.DaysInterval) where the task will be run every X number of days instead of daily.  This daily task can also start a repetition pattern - for example, you want to script to run every 30 minutes from 9 a.m. until 9 p.m.

Line 232-265
Weekly Trigger:  This will set up a a task to run each week on certain days of the week (Sunday - Saturday).  You can set it to occur every so many weeks - for example every other week.

Lines 267-347
Monthly Triggers:  There are two different monthly type triggers.  One will let you pick which day of the week on which the task is run and the other lets you pick on which day of the month it should run (you can even choose if it should run on the last day of each month).  This gives you many options on how to schedule your task.  

Lines 349-372
PC Idle Time Triggers:  This code will set a trigger to run the scheduled task for when the computer has been idle.  Set the length of time the pc must be idle in the "Conditions and Settings" section later in the code.      

Lines 232-265
Weekly Trigger:  This trigger will select the specific days in the week for the task to run.  You can select the weekly pattern also such as run every other week.

Lines 267-347
Monthly Triggers:  You can choose in which months the task should run.  You can set this either by the day of the month (1st, 2nd, 3rd, etc.) or by choosing a day of the week and which weeks in the month this task should run.  You can also set it to always run on the last day of the month which will adjust to the number of days in a month automatically.  Note that the .DaysOfMonth value is a bit flag.  However vbscript cannot pass a decimal bit value to this parameter as it will error from an overflow.  With this flag you need to set you values using the Hexadecimal codes such as &h01& for the first day of the month.

Lines 249-372
PC Idle Triggers:  This trigger will start when the machine has been idle for the set amount of time.  Please note that you will need to set the IDLE Properties also for this trigger.  (Lines 567-577)

Lines 374-397
Upon Task Creation or Modification:  This will mark the task to run if something changes with the task

Lines 399-422
Start Up Trigger:  Set the task to run when the machine has started up or has rebooted

Lines 424-452
Log On Trigger:  Run the task whenever a user logs on to the machine.  If you leave the user name and password options blank it will run for every user or you can set it to run only when a certain user logs on.

Lines 454-490
Session State Change:  You can set the task to run when certain OS type events happen.  These are mainly  focused around remote connection or workstation lock events.


'----------------------------
Lines 495-539
The next section covers what the task should do when the trigger is fired.
'----------------------------

Lines 495-503
Execute:  This will run some type of executable program like a .exe, .bat, .vbs, etc type file.  You can also pass parameters to the file to be run.

Lines 505-531
Email:  This will attempt to send an email using the SMTP Server settings that are set on the task.  

Lines 533-539
Message Box:  This will display a message box to the user


'----------------------------
Lines 541-614
The next section covers how to modify the values for the Conditions and for the settings tabs in the GUI
'----------------------------
Here you set the task to enabled so that it will run on the set time (trigger).  You can set some other values for how long can the task run and what to do with power saving settings.

Now we can save the task.

The last section is just a function to covert a Date value to the format needed by the task scheduler.
4
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Author:ltlbearand3
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Expert Comment

by:pramadya
Dear ltlbearand3 ,

Thank you very much.
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