sysprep.ps1

#https://github.com/hashicorp/packer/issues/9261
#Using this script to deprovision as previous sysprep command has issues

Write-Host '>>> Waiting for GA Service (RdAgent) to start ...'
while ((Get-Service RdAgent).Status -ne 'Running') { Start-Sleep -s 5 }
Write-Host '>>> Waiting for GA Service (WindowsAzureTelemetryService) to start ...'
while ((Get-Service WindowsAzureTelemetryService) -and ((Get-Service WindowsAzureTelemetryService).Status -ne 'Running')) { Start-Sleep -s 5 }
Write-Host '>>> Waiting for GA Service (WindowsAzureGuestAgent) to start ...'
while ((Get-Service WindowsAzureGuestAgent).Status -ne 'Running') { Start-Sleep -s 5 }
Write-Host '>>> Sysprepping VM ...'
if(Test-Path $Env:SystemRoot\system32\Sysprep\unattend.xml) {
  Remove-Item $Env:SystemRoot\system32\Sysprep\unattend.xml -Force
}
& $Env:SystemRoot\System32\Sysprep\Sysprep.exe /oobe /generalize /quiet /quit
while($true) {
  $imageState = (Get-ItemProperty HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Setup\State).ImageState
  Write-Host $imageState
  if ($imageState -eq 'IMAGE_STATE_GENERALIZE_RESEAL_TO_OOBE') { break }
  Start-Sleep -s 5
}
Write-Host '>>> Sysprep complete ...'