Microsoft assigns the Key Management Server (KMS) to solve this problem. In other words, employees of these companies are having trouble authenticating the Windows or other products they use. Īs you know, Microsoft works with many companies, both small and large. We take an example of Microsoft so you can learn correctly. To understand the concept of KMSPico, you must first understand how KMS works. Windows 8.1 Product Key (100% Working) 32/ How KMSPico Works?