KMS Activator is a software tool used to activate Microsoft products, including Windows and Office, by simulating a Key Management Service (KMS) server. Facilitates activation of Windows and Office by mimicking KMS servers. Activates products without needing an online connection. Temporary activation: Typically requires reactivation every 180 days. KMS activator usage might be illegal according to Microsoft’s policies. Not ideal for continuous or commercial use due to potential risks. Compatible with a wide range of Windows and Office versions.