KMSAuto Net 2016 V1.4.9 is a KMS (Key Management Service) activation tool that uses a local KMS host to activate Microsoft products. It's a popular choice among users who want to activate their Microsoft products without spending a fortune. The tool is designed to work with Windows and Office products, including Windows 10, 8.1, 8, 7, and Office 365, 2019, 2016, 2013.