The command cscript slmgr.vbs /skms kms.lotro.cc is used to set the Key Management Service (KMS) server address for a Windows operating system.
The specific server address kms.lotro.cc is a third-party, unofficial KMS server. It is not operated by Microsoft. Using this command attempts to bypass the official Windows activation process. This falls under the category of software piracy and poses significant security risks.