OU of Current PC from anywhere in the Forest

Posted on August 12, 2017September 23, 2017 by Alan

There are a lot of ways to get the OU of the current computer, but most don’t work if you are outside your home domain. This code does, without requiring AD cmdlets:

#My Computername works anywhere in forest
$strFilter = "(&(objectCategory=Computer)(Name=$env:computername))"
$objSearcher = New-Object System.DirectoryServices.DirectorySearcher
$objSearcher.Filter = $strFilter
$searchRootName = [system.directoryservices.activedirectory.forest]::GetCurrentForest().Name.ToString()
$SearchRoot = "GC://"+$SearchRootName
$objSearcher.SearchRoot = $SearchRoot
$objPath = $objSearcher.FindOne()
$dn = ($objPath.GetDirectoryEntry()).Path
$MyPCOU = $dn.Substring($dn.IndexOf("OU"),$dn.Length-$dn.IndexOf("OU"))
$MyPCOU

Update: 9/23/2017: You can also get this information with the ADSystemInfo COM object, see Get-ADSystemInfo; Wrapping the ADSystemInfo ComObject.

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