Let's break down the reality of "activating without a product key."
Type the following command and press Enter (this uses the generic Volume License Key for Windows 8.1 Pro): slmgr /ipk W269N-WFGWX-YVC9B-4J6C9-T83GX Set KMS Server: activate windows 8.1 pro build 9600 without product key
To perform this: