KMS activators are commonly used in unofficial or unauthorized activations, and while it can offer activation without internet connectivity, it is often considered illegal and potentially harmful. Allows activation of Microsoft software via KMS server simulation. Activates products without needing an online connection. Requires periodic reactivation every six months. Unauthorized activation could violate software licensing laws. Not ideal for continuous or commercial use due to potential risks. Available for use on Windows and Office products (various versions).