KMS Client Setup Keys for Volume Activation
Applies To: Windows 10, Windows 8.1, Windows Server 2012 R2
By default, the Windows 7 and Windows Server 2008 R2 and later operating systems use KMS for activation. In volume installations, the setup key is installed by default, which makes the system a KMS client. If you are converting a computer from a KMS host, MAK, or retail edition of Windows to a KMS client, install the applicable setup key (GVLK) from Appendix A: KMS Client Setup Keys by using slmgr /ipk <setup key>.