This function will help showing user interface when using client in system context like SCCM, Intune or Workspace One.

Invoke-ScheduledTask.ps1

Function Invoke-ScheduledTask
    {
        [CmdletBinding()]
        param (
            [Parameter(Mandatory = $true)]
            [String]$TaskName,           
            [Parameter(Mandatory = $true)]
            [String]$command,
            [Parameter(Mandatory = $false)]
            [string]$Parameters,
            [Parameter(Mandatory = $false)]
            [ValidateSet("System","SYSTEM","system","User","USER","user","Admin","ADMIN","admin")]
            [String]$Context = "System",
            [Parameter(Mandatory = $false)]
            [switch]$Interactive,               
            [Parameter(Mandatory = $false)]
            [string]$Description = "Powershell Scheduled task for instant execution (Kinda..)"          
        )   


        #Created Scheduled Task to run as Logged on User
        $TaskName = $TaskName.Replace(" ","_")        
        $ToastGUID = ([guid]::NewGuid()).ToString().ToUpper()
        $Task_TimeToRun = (Get-Date).AddSeconds(10).ToString('s')
        $Task_Expiry = (Get-Date).AddSeconds(120).ToString('s')
        
        If([String]::IsNullOrWhiteSpace($Parameters))
            {$Task_Action = New-ScheduledTaskAction -Execute $command}
        Else 
            {$Task_Action = New-ScheduledTaskAction -Execute $command -Argument $Parameters}

        $Task_Trigger = New-ScheduledTaskTrigger -Once -At $Task_TimeToRun
        $Task_Trigger.EndBoundary = $Task_Expiry

        If ($Context.ToUpper() -eq "SYSTEM")
            {
                if ($Interactive){$LogonType = "Interactive"} Else {$LogonType = "ServiceAccount"}
                $Task_Principal = New-ScheduledTaskPrincipal -UserID "NT AUTHORITY\SYSTEM" -LogonType $LogonType -RunLevel Highest
            }
        elseif ($Context.ToUpper() -eq "ADMIN") 
            {$Task_Principal = New-ScheduledTaskPrincipal -GroupId "S-1-5-32-544" -RunLevel Highest}    
        else 
            {$Task_Principal = New-ScheduledTaskPrincipal -GroupId "S-1-5-32-545" -RunLevel Limited}    
        
        $Task_Settings = New-ScheduledTaskSettingsSet -Compatibility V1 -DeleteExpiredTaskAfter (New-TimeSpan -Seconds 600) -AllowStartIfOnBatteries
        $New_Task = New-ScheduledTask -Description $Description -Action $Task_Action -Principal $Task_Principal -Trigger $Task_Trigger -Settings $Task_Settings
        Try
            {
                Register-ScheduledTask -TaskName $($TaskName + "_" + $ToastGuid) -InputObject $New_Task -ErrorAction SilentlyContinue
                Write-host "Task $taskName scheduled sucessfully in $context context for a planed execution within the next 30 seconds !"
                Write-host "Command to run is: $command $Parameters"
                Return $true
            }
        Catch
            {
                Write-host "[Error], Unable to schedule task $taskName, Aborting !!!"
                Return $false                
            }
    }

    #Task is planned within System or Admin context
    #ServiceUI.exe is part of MDT
    
    #Run as admin with GUI, with all privileges
    #Invoke-ScheduledTask -TaskName PsCleaner -command 'C:\Windows\System32\cleanmgr.exe' -Parameters '/sagerun:1' -Context admin
    #Run as user with GUI, with user only privileges
    #Invoke-ScheduledTask -TaskName PsCleaner -command 'C:\Windows\System32\cleanmgr.exe' -Parameters '/sagerun:1' -Context user
    ##Run as system with GUI (ServiceUI is requiered), with all privileges
    #Invoke-ScheduledTask -TaskName PsCleaner -command "C:\=Perso=\Auchan\Patching\ServiceUI.exe" -Parameters 'C:\Windows\System32\cleanmgr.exe /sagerun:1' -Context System -Interactive