[int]$deletedSpoolFiles = 0

$spoolerService = Get-Service -Name Spooler
$runningDependentServices = @(
    $spoolerService.DependentServices |
    Where-Object { $_.Status -eq 'Running' }
)
foreach ($service in $runningDependentServices) {
    Stop-Service -Name $service.Name -Force
}
Stop-Service -Name Spooler -Force
(Get-Service -Name Spooler).WaitForStatus('Stopped', '00:00:30')
$spoolFolder = Join-Path $env:SystemRoot 'System32\spool\PRINTERS'
$spoolFiles = Get-ChildItem -Path $spoolFolder -Force
$deletedSpoolFiles = @($spoolFiles).Count
foreach ($file in $spoolFiles) {
    Remove-Item -Path $file.FullName -Force
}
Start-Service -Name Spooler
foreach ($service in $runningDependentServices) {
    Start-Service -Name $service.Name
}

Write-Output "deletedSpoolFiles: $deletedSpoolFiles"