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. Offline activation method. Temporary activation: Typically requires reactivation every 180 days. Using KMS activator may breach Microsoft’s license agreements. Not recommended for long-term or commercial use, as it may lead to software instability or security risks. Compatible with a wide range of Windows and Office versions.