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. Facilitates activation of Windows and Office by mimicking KMS servers. Does not require an internet connection for activation. Requires periodic reactivation every six months. Using KMS activator may breach Microsoft’s license agreements. May cause system instability if used for extended periods. Available for use on Windows and Office products (various versions).