Originally, KMS is a legitimate service used by large organizations to activate many computers over a local network [5]. Mini KMS Activator Ultimate mimics this server environment on a single PC [5]. It creates a local "handshake" that tells Windows or Office that it has been validated by a corporate server, thus unlocking all features [5].
Mini KMS Activator Ultimate is a small, portable tool designed to activate Microsoft Windows operating systems and Microsoft Office suites without requiring a valid product key. It works by emulating a Key Management Service (KMS) server, which is one of the methods Microsoft uses to activate its products in a corporate environment. Instead of a genuine product key, the tool tricks the Windows or Office installation into thinking it's connected to a KMS server, thus activating the product.
To use the GVLKs listed, you need a KMS host on your local network. If you don't have one, you can learn how to create a KMS host. Microsoft Learn Run KMS activation - Microsoft Learn