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Key Management Service (KMS) is a legitimate Microsoft technology used by large organizations to activate many Windows machines on a local network. Instead of each PC phoning home to Microsoft, they phone home to a company server running KMS. github windows activation cmd link
echo Activation complete. Showing license info: cscript //nologo %windir%\system32\slmgr.vbs /dlv pause Select , PowerShell (Admin) , or Command Prompt (Admin)