Powershell Script Running Slowly

Question

I\'m writing a script to check the version on about 15 remote servers and the script is taking much longer to execute than I would expect.

$listServers = @(\"com         


        

Answer 1

Queries against Win32_Product trigger a reconfiguration of installed packages, which is what makes the process so time-consuming. It also makes such queries potentially harmful, since it may inadvertently reset configuration parameters.

For something like a version check on a particular program you're better off reading the information directly from the (remote) registry:

$listServers | % {
  $reg = [Microsoft.Win32.RegistryKey]::OpenRemoteBaseKey('LocalMachine', $_)
  $key = $reg.OpenSubKey('SOFTWARE\JavaSoft\Java Runtime Environment')
  New-Object -Type PSObject -Property @{
    'Server'      = $_
    'JavaVersion' = $key.GetValue('CurrentVersion')
  }
} | Export-Csv 'C:\temp\javaVersion.csv' -NoType