Set dateTime = CreateObject("WbemScripting.SWbemDateTime") For Each os In GetObject("winmgmts:").InstancesOf("Win32_OperatingSystem") ' the InstallDate property is a CIM_DATETIME. WScript.Echo "Operating system installation date:" WScript.Echo " WMI DATETIME format: " & os.InstallDate dateTime.Value = os.InstallDate WScript.Echo " VT_DATE format: " & dateTime.GetVarDate Next