ScheduledTaskAction

PowerShell Help
1

Hi,
have some problem with my code
I try to create ScheduledTask on Win10 and Win7
code working on both systems when i run it manualy, but when push it from SCCM its working on Win10 and created ScheduledTask with userID(this is what i need) but on Win7 and on some Win 10 machines its create task with computerID insted userid

$UserID = Get-CimInstance –ClassName Win32_ComputerSystem | Select-Object -expand UserName

if([string]::IsNullOrEmpty($UserID))
{
$UserID = $env:USERNAME
#start-sleep -Seconds 60
$action = New-ScheduledTaskAction -Execute "cmd"
$action.Arguments = "/c Start /min powershell.exe -ExecutionPolicy Unrestricted -WindowStyle Hidden -NonInteractive -NoProfile -File C:\Test.ps1"
$trigger = New-ScheduledTaskTrigger -Weekly -At "10:00" -DaysOfWeek "Monday"
$principal = New-ScheduledTaskPrincipal -UserId ($UserID) -RunLevel Highest -ErrorAction SilentlyContinue
$task = New-ScheduledTask -Action $action -Trigger $trigger -Principal $principal
Register-ScheduledTask "Test" -InputObject $task
}

else
{
$action = New-ScheduledTaskAction -Execute "cmd"
$action.Arguments = "/c Start /min powershell.exe -ExecutionPolicy Unrestricted -WindowStyle Hidden -NonInteractive -NoProfile -File C:\Test.ps1"
$trigger = New-ScheduledTaskTrigger -Weekly -At "10:00" -DaysOfWeek "Monday"
$principal = New-ScheduledTaskPrincipal -UserId (Get-CimInstance –ClassName Win32_ComputerSystem | Select-Object -expand UserName) -RunLevel Highest -ErrorAction SilentlyContinue
#$UserID = "$principal.UserId"
#$UserID = "$env:USERNAME"
#$principal = New-ScheduledTaskPrincipal -UserId ("$UserID") -RunLevel Highest -ErrorAction SilentlyContinue
#$principal = New-ScheduledTaskPrincipal -UserId ("$env:USERDOMAIN\$env:USERNAME") -RunLevel Highest -ErrorAction SilentlyContinue
$task = New-ScheduledTask -Action $action -Trigger $trigger -Principal $principal
Register-ScheduledTask "Test" -InputObject $task
}

Thanks in advance

2

Hi brad-sam,

I don’t have a way of testing but my guess is this is more of an ‘environment’ issue rather than directly with the script. Here are some thoughts.

  • When you run the script manually, what user account are you running as?
  • Under what user context is the SCCM client running? Basically this will determine what ‘user account’ is running the PowerShell script, and hence what the $UserID will be.
  • Check what account the SCCM client uses on Win7 and Win10 and compare. Do they differ?

Hope some of that helps!

3

Hi LogicalToolkit,
SCCM running as System account for all environment also when i runnig script manualy i run it as admin
Its working on one win 10 machine but failing on other win 10 and win 7 machines

4

For a process which is running under the context of SYSTEM, the $env:USERNAME variable will have the value of COMPUTERNAME$.

  • On the failing machines do you know which part of the ‘if’ statement is running?
  • Does the CimCmdlets module exist on the failing machines?
5

Hi LogicalToolkit,
yes, you right
when i run this command “Get-CimInstance –ClassName Win32_ComputerSystem | Select-Object -expand UserName” on both machine i received different output
and on failing machines - fierst part of the ‘if’ statement is running