Clean out print spooler from non-cancellable jobs by completely emptying the spooler.

purgeSprintSpooler.ps1

$killPrintSpoolContent = {
    Write-Host "Stopping print spooler."
    Stop-Service -Name "Spooler" -Force -ErrorAction Continue
    $queue = Get-ChildItem -Path "C:\WINDOWS\system32\spool\PRINTERS" -ErrorAction Continue
    Write-Host "Deleting following print jobs from spooler:"
    Write-Host $queue
    $queue | Remove-Item -ErrorAction Continue
    Start-Service -Name "Spooler" -ErrorAction Continue
    Write-Host "Starting print spooler."
    Read-Host “Press ENTER to continue...”
}
Write-Host "Escalating to admin privileges to manage services"
Start-Process -FilePath powershell.exe -ArgumentList $killPrintSpoolContent -verb RunAs -WorkingDirectory C: