#Backup-BitlockerasSystem
$urlPSexec = 'https://live.sysinternals.com/psexec.exe'
$psexecEXE = 'C:\Windows\Temp\psexec.exe'
$out = [System.IO.Path]::GetTempFileName()


if (!$(Test-Path $psexecEXE))
{
    Write-Host "Downloading $urlPSexec to $psexecEXE"
    (New-Object System.Net.WebClient).DownloadFile($urlPSexec, $psexecEXE)
}

#The command to run as the system account. Using Start-Transcript to get the results
[String]$backupCommand = "Start-Transcript -Path ""$out"";Backup-BitLockerKeyProtector -MountPoint 'C:' -KeyProtectorId " + '$((Get-BitLockerVolume -MountPoint "C:").KeyProtector[1].KeyProtectorId)'

Write-Host "Running command as system: $backupCommand"
#Start Powershell as the system account and run $backupCommand
$procPsExec = Start-Process -PassThru -Wait -FilePath $psexecEXE -ArgumentList "-acceptEULA -s -i powershell -noprofile -command $backupcommand"
Write-Host "PSExec process exited with code $($procPsExec.ExitCode)"
if ($procPsExec.ExitCode -eq 0)
{
    #Display Success message
    Write-Host "Bitlocker Backup was success"
    Write-Host $(Get-Content $out | Out-String)
} else {
    #Display Failure
    Write-Host "Bitlocker Backup was failure"
    Write-Error $(Get-Content $out | Out-String)
}