Hi,
As per the screenshot, you are using a third party program to activate Windows Server 2012. Microsoft always recommends to use the genuine copy of Windows. Genuine Windows is published by Microsoft, properly licensed, and supported by Microsoft or a trusted partner. Only genuine Windows customers have access to all optional updates and downloads available from Microsoft, which are designed to help you get the most from your PC. We cannot help you if you are not using a Genuine Windows.
Have you purchased Windows Server 2012 through Microsoft?
Please update with the required information for further information.