Can anyone tell me how to create a scheduled task using powershell that runs as the local system or local service?
Everything works great except the call to ITaskFolder.RegisterTaskDefinition().
If I pass in $null, or "", than the call bombs saying invalid username or password.
Any thoughts"
$Rootfolder.RegisterTaskDefinition("Test", $Taskdef, 6, "LOCAL SERVICE", "", 3)
For those who can use PowerShell 3.0 on Windows 8 or Windows Server 2012, new cmdlets will let you do it in a simple way when registering your scheduled task with the cmdlet Register-ScheduledTask and as argument -User "System"
Here is a scheduled task created entirely with PS, its purpose is to restart a service My Service, using the SYSTEM account, 3 minutes after the system has started:
$taskname = "Restart My Service"
$taskdescription = "Restart My Service after startup"
$action = New-ScheduledTaskAction -Execute 'Powershell.exe' `
-Argument '-NoProfile -WindowStyle Hidden -command "& Restart-Service -displayname \"My Service\""'
$trigger = New-ScheduledTaskTrigger -AtStartup -RandomDelay (New-TimeSpan -minutes 3)
$settings = New-ScheduledTaskSettingsSet -ExecutionTimeLimit (New-TimeSpan -Minutes 2) -RestartCount 3 -RestartInterval (New-TimeSpan -Minutes 1)
Register-ScheduledTask -Action $action -Trigger $trigger -TaskName $taskname -Description $taskdescription -Settings $settings -User "System"
NB: you will need to run powershell as an administrator for that script.
I think you would need to use "nt authority\localservice" as the user name.
Kindness,
Dan
This code snippet will use the PowerShellPack's Task Scheduler module to schedule a task to run as SYSTEM immediately:
New-Task |
ForEach-Object {
$_.Principal.Id = "NTAuthority\SYSTEM"
$_.Principal.RunLevel = 1
$_
} |
Add-TaskAction -Script {
"SystemTask" > C:\myTest.txt
} |
Add-TaskTrigger -OnRegistration |
Register-ScheduledTask SystemTask
Related
This is my powershell script that creates a simple task that repeats every hour.
$lSTName="logrotate_all0"
$lTSettings=New-ScheduledTaskSettingsSet -Compatibility Vista -MultipleInstances IgnoreNew -StartWhenAvailable
$lUser= "$env:USERDOMAIN\sssssssssssssss"
$lPW= "zzzzzzzzzzzzzzz"
$lAction= New-ScheduledTaskAction -Execute "c:\winapp\cygwin64\bin\bash.exe" -Argument "c:\winapp\bu\bin\logrotate.all.sh" -WorkingDirectory "c:\winapp\bu\bin"
$lTaskDescription="send logs"
$lTimeStart=(Get-Date).AddHours(1)
$lTriggerOnce= ( New-ScheduledTaskTrigger -At $lTimeStart -Once )
$lTrigger=$lTriggerOnce
$lTrigger.Enabled=$true
$lTrigger.RepetitionInterval = (New-TimeSpan -Hours 1)
$lTrigger.RepetitionDuration = (New-TimeSpan -Days 1)
#$lTrigger.Repetition.StopAtDurationEnd=$false
Register-ScheduledTask -TaskName $lSTName -Trigger $lTrigger -User $lUser -Password $lPW -Action $lAction -RunLevel Limited –Force -Settings $lTSettings -Description $lTaskDescription
In the Task Scheduler interface, the task trigger looks like this
But I need the "stop all running tasks at end of repetition duration" flag to be false
My question: How I can to set the state "StopAtDurationEnd" = $false in powershell?
I was read Create an idle trigger in PowerShell for Windows Task Scheduler but i cant reconfigure that script action to "once" or "starup" and i dont know how i can setup workdir into action object.
The New-ScheduledTaskTrigger is very poor to description and doesnt describe case "StopAtDurationEnd"
Good Afternoon:
I have written a PS Script that can create a task on my local machine; however, it is my intention to have this configure a task on multiple machines from a list. I cannot seem to find a way on how to do this. I did see something on using New-CimSession, but I dont think that is what I am looking for...
Here is my script:
foreach ($confighost in (Get-Content -Path "C:\Users\*User*\Documents\Test.txt"))
{
#Check for existent script in Task Scheduler
$taskpath = "\\$confighost\c$\Windows\System32\Tasks\LocalUserCleanUp"
$testtask = Test-Path -path $taskpath
If ($testtask -eq $true)
{
#If Task is already present, Do Not Run
Write-Host "CleanUp Task Listed in Task Scheduler On" $confighost ". Will not Implement Task..."
}
else
{
#If Task Does Not Exist Create Task
New-CimSession -ComputerName $confighost
Write-Host "No CleanUp Task Listed in Task Scheduler, Creating Task..."
$action = New-ScheduledTaskAction -Execute 'Powershell.exe' -Argument "C:\Users\*Users*\Documents\ProfileCleanup.ps1"
$trigger = New-ScheduledTaskTrigger -Daily -At 2am
$settings = New-ScheduledTaskPrincipal -UserId "SYSTEM" -LogonType ServiceAccount -RunLevel Highest
Register-ScheduledTask -Action $action -Trigger $trigger -Principal $settings -TaskName "LocalUserCleanUp" -Description "Checks user accounts nightly to see if they are older than 30 days"
}
}
I look forward to your insight. Thanks again for all your assistance!
You can use Invoke-Command to execute your task creation code on a target server:
$cred = Get-Credential # There are a number of methods to automate reading the credential from a file
Invoke-Command -Credential $cred -ComputerName server01, server02, server0X {
# Your task creation code here
}
If you have any variables defined in your local session that you need available in the remote code, you can reference them in your Invoke-Command ScriptBlock reference the variable from the using scope by prefixing the local variable with $using:.
I am trying to figure out how to write a PowerShell script to find and run a scheduled task, or if it is not there then to create it. Here is what I have built so far. The else statement works but the first task does not.
$taskName = "crebackup"
$taskExists = Get-ScheduledTask | Where-Object {$_.TaskName -like $taskName}
if($taskExists) {
Start-ScheduledTask -TaskName "crebackup"}
else {
$action = New-ScheduledTaskAction -Execute “C:\POSNation\SQLBackup\sqlbackup.exe”
$Trigger = New-ScheduledTaskTrigger -Daily -At 3am
$Settings = New-ScheduledTaskSettingsSet
$Task = New-ScheduledTask -Action $Action -Trigger $Trigger -Settings $Settings
Register-ScheduledTask -TaskName 'crebackup' -InputObject $Task -User 'usernamehere' -Password 'passwordhere'}
In this case the sqlbackup.exe task needed the working directory to start in. This is displayed as "Start in (optional)" when you look at the task using Task Scheduler. To add that, use this for the $action variable:
$action = New-ScheduledTaskAction -WorkingDirectory "C:\POSNation\SQLBackup" -Execute "C:\POSNation\SQLBackup\sqlbackup.exe"
Also, make sure scripts don't have any smart quotes in them(“, ”). Smart quotes are often automatically generated by word processors and some websites. I replaced the smart quotes in the example above.
I need to write a script, which will create task scheduler job, which at pc startup will run executable. In short, script will be something like this:
$trigger = New-JobTrigger -AtStartup -RandomDelay 00:00:10
Register-ScheduledJob -Trigger $trigger -Name FileJob -ScriptBlock {$args[0]}
But it doesn't work. What's wrong?
I use the following Powershell snippet to create Windows Scheduled Tasks.
$action = New-ScheduledTaskAction -Execute 'application.exe' -Argument '-NoProfile -WindowStyle Hidden'
$trigger = New-ScheduledTaskTrigger -AtStartup -RandomDelay 00:00:10
Register-ScheduledTask -Action $action -Trigger $trigger -TaskName "FileJob" -Description "FileJob"
This is what I use to create my task:
#The first command uses the New-ScheduledTaskAction cmdlet to assign the action variable $A to the executable file tskmgr.exe
$A = New-ScheduledTaskAction -Execute "C:\WINDOWS\SysWOW64\WindowsPowerShell\v1.0\powershell.exe" -file "C:\directory\powershell.ps1"
#The second command uses the New-ScheduledTaskTrigger cmdlet to assign the trigger variable $T to the value AtLogon
$T = New-ScheduledTaskTrigger -weekly -DaysOfWeek Saturday -At 7am
#The third command uses the New-ScheduledTaskSettingsSet cmdlet to assign the settings variable $S to a task settings object
$S = New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -DontStopIfGoingOnBatteries -DontStopOnIdleEnd -ExecutionTimeLimit 1:00:00 -MultipleInstances 2
#The fourth command assigns the principal variable to the New-ScheduledTaskPrincipal of the scheduled task, Domain\Username
$P = New-ScheduledTaskPrincipal -UserId domain\gMSAaccount$ -LogonType Password -RunLevel Highest
#The fifth command sets the description varible to $D for the task definition
$D = "Insert your description here"
#Registers the new scheduled task and defines it by using the $D variable
Register-ScheduledTask Name_of_Task -Action $A -Trigger $T -Settings $S -Principal $P -Description $D<p>
I found that using gMSA accounts are the best in an active directory environment. Implement gMSA The requirement is that in order to use gMSA, you must create your task with a powershell script or schtask.exe.
I have a script that can legitimately run much longer than 3 days (it's a command queuing script, so it has a lot of pauses in it waiting for a job to complete). I'm using the PowerShell Register-ScheduledJob cmdlet to create the job.
Everything works great except, by default, the Windows Task Scheduler will stop the script if it hasn't completed after 3 days. I can work around this by going in the GUI and unchecking the 'Stop the task if it runs longer than: 3 days' check box. I need to be able to 'uncheck' that box via Powershell code. Here's how I'm scheduling it currently:
$immediate = (get-date).AddMinutes(2).ToString("MM/dd/yyyy HH:mm")
$scheduled_date = get-date -Format "yyyyMMMd-HHMMss"
$trigger = New-JobTrigger -Once -At $immediate
$sjo = New-ScheduledJobOption -RunElevated
Register-ScheduledJob -Name "SVC Migrations - $scheduled_date" -ScriptBlock {powershell.exe -File C:\scripts\addvdiskcopy_queue.ps1 } -Trigger $trigger -ScheduledJobOption $sjo >> C:\scripts\temp\job_scheduled.txt
Again, everything works great with this until 72 hours hits. Any help is appreciated!
Thanks!
New-ScheduledTaskSettingsSet -ExecutionTimeLimit 0
This returns an object that can be passed to Register-ScheduledJob's -Settings argument. For example:
Register-ScheduledJob `
-Settings $(New-ScheduledTaskSettingsSet -ExecutionTimeLimit 0) `
# ...further arguments...
Just figured this out on Server 2012R2 without having to use the external DLL.
Works with Register-ScheduledTask but haven't tested with Register-ScheduledJob.
I created the with Register-ScheduledTask in a way similar to the above but without the ExecutionTimeLimit setting defined. This gave me the default of 3 days.
Then I returned the task and changed the settings as below:
$Task = Get-ScheduledTask -TaskName "MyTask"
$Task.Settings.ExecutionTimeLimit = "PT0H"
Set-ScheduledTask $Task
Check out this thread on CodePlex.
It looks like you can use the Task Scheduler Managed Library to achieve this. You'll need to download the library and load the DLL. Here is a fully working sample (just update the path to the DLL).
$TaskName = 'asdf';
# Unregister the Scheduled Job if it exists
Get-ScheduledJob asdf -ErrorAction SilentlyContinue | Unregister-ScheduledJob;
# Create the Scheduled Job
$Trigger = New-JobTrigger -At '5:00 PM' -Once;
$Option = New-ScheduledJobOption;
$Action = { Write-Host 'hi'; };
$Job = Register-ScheduledJob -Name asdf -ScriptBlock $Action -Trigger $Trigger -ScheduledJobOption $Option;
# Modify the Scheduled Job using external library
Add-Type -Path "C:\Users\Trevor\Downloads\TaskScheduler\Microsoft.Win32.TaskScheduler.dll";
$TaskService = New-Object -TypeName Microsoft.Win32.TaskScheduler.TaskService;
$Task = $TaskService.FindTask($TaskName, $true);
$Task.Definition.Settings.ExecutionTimeLimit = [System.TimeSpan]::Zero;
$Task.RegisterChanges();
I tested the library in my environment, and it works as expected. The net result is that the "Stop the task if it runs longer than" checkbox is disabled.
Use the following settings in task definition:
New-ScheduledTaskSettingsSet -ExecutionTimeLimit "PT0S"
Older post, but none of these options worked for me other than what #jdc0589 said in a comment. I run this script on an Azure VM running Windows Server 2016 Datacenter.
$action = New-ScheduledTaskAction -Execute "java.exe" `
-Argument "-jar `"D:\Selenium\selenium-grid-extras.jar`"" `
-WorkingDirectory "D:\Selenium"
$trigger = New-ScheduledTaskTrigger -AtStartup
$everyMinute = New-TimeSpan -Minutes 1
$nolimit = New-TimeSpan -Minutes 0
$settings = New-ScheduledTaskSettingsSet `
-MultipleInstances IgnoreNew `
-RestartInterval $everyMinute `
-RestartCount 999 `
-Priority 0 `
-ExecutionTimeLimit $nolimit `
-StartWhenAvailable `
-DisallowHardTerminate
Register-ScheduledTask `
-Action $action `
-Trigger $trigger `
-Settings $settings `
-TaskName "Start SGE Hub" `
-TaskPath "\Selenium Grid Extras" `
-Description "At machine startup, run SGE so that the hub can process tests without a logon" `
-RunLevel Highest `
-User "SYSTEM" `
-Force