KMS is a volume activation method where client machines on a local network activate against a local rather than Microsoft’s own servers.
: If you are part of an organization, use the official Microsoft Volume Activation methods which are secure and supported. To give you the best advice, could you tell me: Are you trying to activate Windows or Office ? Is this for a personal computer or a work/business machine?
: Capable of activating both Microsoft Windows operating systems and Microsoft Office suites. Offline Activation