A KMS client connects to a KMS server (the activation host), which contains the host key the client uses for activation. Once KMS clients are validated, the Microsoft product on those clients contacts the server every 180 days (6 months) to maintain its validity. However, a KMS set-up is only viable for large organizations with Volume Licensed (VL) Microsoft products.




KMS Client Emulator V10 For Increasing KMS Server Client Count