Generic keys (also called or “GVLK” keys) are real, legal keys published by Microsoft. They were designed for volume licensing scenarios. For Windows 7, famous examples include:
Generic keys allow the installer to bypass the key entry screen or automate the installation script. They match the edition of Windows being installed (e.g., Home Premium, Professional, Ultimate), allowing the installation to proceed to the desktop. windows 7 generic key
Windows will copy files and install features. Once completed, you will reach the desktop. Generic keys (also called or “GVLK” keys) are