strComputer = "."
Set objWMIService = GetObject("winmgmts:" _
    & "{impersonationLevel=impersonate}!\\" _
    & strComputer & "\root\cimv2")
Set colWindowsProducts = objWMIService.ExecQuery _
    ("Select * from Win32_WindowsProductActivation")
For Each objWindowsProduct in colWindowsProducts
    ObjWindowsProduct.ActivateOnline()
Next