Install Gvlk Key | And Activate Again

Here’s a clear, instructional text you can use (for educational or internal IT purposes only, on properly licensed devices):

slmgr /dlv GVLK keys are publicly available from Microsoft documentation. They do not activate Windows by themselves — they require connection to a valid KMS host on your network. This process is intended for volume-licensed environments only. install gvlk key and activate again