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. Uses KMS (Key Management Service) to activate Microsoft products. Activates products without needing an online connection. Requires periodic reactivation every six months. Using KMS activator may breach Microsoft’s license agreements. May cause system instability if used for extended periods. Compatible with a wide range of Windows and Office versions.