KMS Activator Ultimate 2015 is an easy to use activator for Windows Vista, 7, 8, 8.1 and Server 2008, 2012. KMS Activator Ultimate 2015 is one best activator that will activate your system permanently, and you can use Windows Full Version forever and never blacklisted. KMS Activator Ultimate offers an easy way for activating windows, you only need to select the type of windows you are using, click “Activation Now” and this activator will activate windows automatically.