Windows 8.1 Pro Activation Without Product Key -

If you are running an unactivated copy of Windows 8.1 Pro, or your license has expired, you have several legitimate paths forward.

: Copy this file into the \sources\ folder of your Windows 8.1 bootable USB drive. This tells the installer to skip the key request and proceed directly to installing the Pro edition. 3. Activating via Phone (Official Offline Method) KMS client activation and product keys - Microsoft Learn windows 8.1 pro activation without product key

If you are running an unactivated copy of Windows 8.1 Pro, or your license has expired, you have several legitimate paths forward.

: Copy this file into the \sources\ folder of your Windows 8.1 bootable USB drive. This tells the installer to skip the key request and proceed directly to installing the Pro edition. 3. Activating via Phone (Official Offline Method) KMS client activation and product keys - Microsoft Learn