To convert an Active Directory SID to a name use:
$SID ='S-1-5-21-1210182304-1361979235-1847136127-5299' $objSID = New-Object System.Security.Principal.SecurityIdentifier($SID) $objUser = $objSID.Translate([System.Security.Principal.NTAccount]) Write-Host "Resolved user name: " $objUser.Value
Remember that you cannot translate the SID if the object has been deleted.
