Set-Win32ScheduledTasks.ps1
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<#PSScriptInfo
.GUID d572020a-7583-4867-a845-bb9737b1ecd9 .VERSION 1.0.0.1 .AUTHOR Michael Haken .COMPANYNAME BAMCIS .COPYRIGHT (c) 2016 BAMCIS. All rights reserved. .TAGS WMI ScheduledTasks TaskScheduler .LICENSEURI https://www.bamcisnetworks.net/license .PROJECTURI .ICONURI .EXTERNALMODULEDEPENDENCIES .REQUIREDSCRIPTS .EXTERNALSCRIPTDEPENDENCIES .RELEASENOTES Added compatibility for Nano server. #> <# .SYNOPSIS Creates the Win32_ScheduledTask WMI class on the local computer or a remote computer. .DESCRIPTION The cmdlet creates a custom WMI class for enumerating scheduled task information. It creates a temporary mof file on the SystemDrive and calls mofcomp.exe to add the WMI class. .PARAMETER ComputerName The computer to create the custom WMI classes on. This defaults to [System.String]::Empty, which will execute on the local host. If the target is a remote computer, Invoke-Command is used to execute the underlying function. .PARAMETER TempFilePath Where the temporary mof file is stored, this defaults to %SYSTEMDRIVE%\ScheduledTasks.mof. .PARAMETER Credential The credential to use to execute the script. If credentials are specified and the computer is the localhost, WinRM is used locally to execute the commands. .EXAMPLE Set-Win32ScheduledTasks Creates the custom WMI class on the local computer. .EXAMPLE Set-Win32ScheduledTasks -ComputerName server1.contoso.com -Credential (Get-Credential) Creates the custom WMI class on server1.contoso.com. .INPUTS None .OUTPUTS None .NOTES AUTHOR: Michael Haken LAST UPDATE: 1/3/2017 #> Param ( [Parameter(Position = 0)] [System.String]$ComputerName = [System.String]::Empty, [Parameter(Position= 1)] [System.String]$TempFilePath = "$env:SYSTEMDRIVE\ScheduledTasks.mof", [Parameter(Position = 2)] [System.Management.Automation.PSCredential] [System.Management.Automation.Credential()] $Credential = [System.Management.Automation.PSCredential]::Empty ) Function Set-WMIClass { Begin { if (([System.Security.Principal.WindowsPrincipal][System.Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([System.Security.Principal.WindowsBuiltInRole]::Administrator)) { $MOFFile = "win32_scheduledtasks.mof" $WMIClass = "win32_ScheduledTasks" $Contents = @" #pragma namespace("\\\\.\\root\\cimv2") #PRAGMA AUTORECOVER [dynamic, provider("RegProv"), ProviderClsid("{fe9af5c0-d3b6-11ce-a5b6-00aa00680c3f}"),ClassContext("local|HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Schedule\\TaskCache\\Tasks")] class $WMIClass { [key] string KeyName; [read, propertycontext("Actions")] uint8 Actions[]; [read, propertycontext("Author")] string Author; [read, propertycontext("Data")] string Data; [read, propertycontext("Date")] string Date; [read, propertycontext("Description")] string Description; [read, propertycontext("DynamicInfo")] uint8 DynamicInfo[]; [read, propertycontext("Hash")] uint8 Hash[]; [read, propertycontext("Path")] string Path; [read, propertycontext("Schema")] uint32 Schema; [read, propertycontext("SecurityDescriptor")] string SecurityDescriptor; [read, propertycontext("Source")] string Source; [read, propertycontext("Triggers")] uint8 Triggers[]; [read, propertycontext("URI")] string URI; [read, propertycontext("Version")] string Version; }; "@ } else { Write-Warning "Script must be run with administrator privileges." Exit } } Process { Set-Content -Path $TempFilePath -Value $Contents $ScheduledTask = Get-CimInstance -ClassName $WMIClass -Namespace "root/cimv2" -ErrorAction SilentlyContinue $InstallType = Get-ItemProperty -Path 'HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion' -Name InstallationType | Select-Object -ExpandProperty InstallationType if ($ScheduledTask -ne $null) { if ($InstallType -eq "Nano Server") { Start-Process -FilePath "$($env:SystemRoot)\system32\wbem\wmic.exe" -ArgumentList @("class $WMIClass delete") -Wait | Out-Null } else { Start-Process -FilePath "$($env:SystemRoot)\system32\wbem\wmic.exe" -ArgumentList @("class $WMIClass delete") -WindowStyle Hidden -Wait | Out-Null } } if ($InstallType -eq "Nano Server") { Start-Process -FilePath ($env:SystemRoot + "\system32\wbem\mofcomp.exe") -ArgumentList @($TempFilePath) -Wait | Out-Null } else { Start-Process -FilePath ($env:SystemRoot + "\system32\wbem\mofcomp.exe") -ArgumentList @($TempFilePath) -WindowStyle Hidden -Wait | Out-Null } $Counter = 0 while ($Counter -lt 30) { try { Remove-Item -Path $TempFilePath -ErrorAction Stop -Force | Out-Null break } catch [Exception] { $Counter++ if ($Counter -ge 30) { Write-Warning "Timeout waiting to delete the temporary mof file, delete manually." break } Start-Sleep -Seconds 1 } } $ScheduledTask = Get-CimInstance -ClassName $WMIClass -Namespace "root/cimv2" -ErrorAction SilentlyContinue if ($ScheduledTask -ne $null) { Write-Host "Creating the WMI class was successful." -ForegroundColor Green } else { Write-Host "There was an error creating the class." -ForegroundColor Red } } End { } } [bool]$Local = [System.String]::IsNullOrEmpty($ComputerName) -or ` $ComputerName -eq "." -or ` $ComputerName.ToLower() -eq "localhost" -or ` $ComputerName.ToLower() -eq $ENV:COMPUTERNAME.ToLower() -or ` $ComputerName -eq "127.0.0.1" if ($Credential -eq $null) { $Credential = [System.Management.Automation.PSCredential]::Empty } if ($Local -and $Credential -eq [PSCredential]::Empty) { Set-WMIClass } else { Invoke-Command -ComputerName $ComputerName -ScriptBlock ${function:Set-WMIClass} -Credential $Credential } |