KMS activates computers on a local network, eliminating the need for individual computers to connect to Microsoft. To do this, KMS uses a client–server topology. KMS client computers can locate KMS host computers by DNS or static configration. when server qualify for KMS activation, it can provide the activation service. With this principle many people developed KMS activetools, but some of them works not very well. It is even worth to see Malicious code in these tools. vlmcsd provide a KMS server simulator write with…