Powershell – Get Installed Microsoft Outlook Version with WMI

This script is tailored to determine the current version of Outlook 2003, however you can adjust the version numbers to locate other versions of Outlook without much work.

$outlook11Versions = @("11.0.5608.5606","11.0.5608.5703","11.6359.6360","11.6568.6568")

$q = New-Object System.Management.ObjectQuery
$q.QueryString = "Select * from Win32_Product Where Caption Like '%Microsoft Office%'"
$s = New-Object System.Management.ManagementObjectSearcher($q)

$s.Get() | ForEach-Object {
	if ($_.Name -like "*Outlook*") {

		# check for outlook 2003
		for ($i=0; $i -lt $outlook11Versions.Length; $i++) {
			if ($_.Version -eq $outlook11Versions[$i]) {
				$old = $True
				$found = "Outlook 2003 " + $_.Version
			}
		}
	}
}

if ($old) {
	Write-Host $found -ForegroundColor Red
}
else {
	Write-Host "newer than 2003" -ForegroundColor Green
}