Microsoft provides several pathways for activating Windows Server 2012 R2 depending on your current license type: Standard Activation (Internet/Phone) Navigate to Control Panel > System and Security > System and select Activate Windows now
Enter the following command to switch to the full Standard edition:
: The system will usually reboot twice to complete the conversion. Troubleshooting Activation
John contacted Microsoft's customer support and explained the situation. The support team offered to help him find a suitable solution, including possible discounts or promotions.
"WINDOWS SERVER 2012 R2 STANDARD PRODUCT KEY ACTIVATION FREE TOP." The top comment was from a user named AdminGhost