Using such software is a violation of Microsoft's terms of service and is considered software piracy in most jurisdictions.
While the history of these tools is a fascinating look at reverse engineering, using them carries significant risks: KMSAuto Lite 1.4.0 Multilingual Portable
The story of KMSAuto Lite 1.4.0 is one that sits in the "gray area" of the internet—a tale of clever coding, cat-and-mouse games with giant corporations, and the risks users take to save a few dollars. The Origin: The "KMS" Secret To understand KMSAuto, you have to understand KMS (Key Management Service) Using such software is a violation of Microsoft's
A legitimate Microsoft technology used by large organizations to activate many computers over a local network. Emulation: cat-and-mouse games with giant corporations
Privacy and data concerns