GVLKs are the default product keys used by the volume-license editions of Windows Vista, Windows 7, Windows 8, Windows 10, Windows Server 2008, Windows Server 2008 R2, Windows Server® 2012, and Microsoft Office 2010. You can use VAMT to activate Generic Volume Licensing Keys, or KMS client keys, on products accessible to VAMT. The Volume Activation Management Tool (VAMT) can be used to perform volume activation using the Key Management Service (KMS).
