It routes the system's activation requests back to the emulated local server.

: Many download sources for KMSpico are "fake" and bundle the activator with dangerous malware like CryptBot (designed to steal cryptocurrency and browser credentials) or ransomware like Domino .

KMSpico v9.3.1 is a legacy version of a popular, unofficial software tool used to bypass Microsoft's licensing requirements for Windows and Office products

To the user, this looks like a permanent lifetime activation. To Microsoft’s servers, the computer appears to be a legitimate corporate device.