Legality: High (fully sanctioned)
: Connect your system to a public KMS server: slmgr /skms kms8.msguides.com Activate Windows : Finalize the process by typing: slmgr /ato activate windows 8.1 pro build 9600 without product key
– If you previously had a valid Windows 7, 8, or 8.1 license (including an OEM key from a sticker or BIOS), you can often still activate Windows 8.1 Pro by entering that same key during installation. Microsoft’s activation servers still accept many of these keys. Legality: High (fully sanctioned) : Connect your system
Windows 8.1 Pro allows you to reset the activation grace period up to 3 times (90 days total) using a built-in command. After that, you can modify the registry to extend further. activate windows 8.1 pro build 9600 without product key