Activating Windows 8.1 Pro Build 9600 without a product key is possible through several legitimate methods if your computer originally included a license embedded in its firmware. For systems without such a license, options are more limited.
This method uses the Command Prompt to connect to a Key Management Service (KMS). This is a legal, Microsoft-intended way to activate volume licenses, often used by organizations. It activates Windows for 180 days, after which it can be renewed. activate windows 8.1 pro build 9600 without product key
Some third-party tools claim to activate Windows 8.1 without a product key. is one of the popular ones. Activating Windows 8