As of , Microsoft no longer provides free security updates, bug fixes, or technical support for any edition of Windows Server 2012. If you must continue using this OS, consider these options: Windows Server 2012 R2 - Microsoft Lifecycle
Before proceeding with a download, it is critical to understand the security implications: windows server 2012 iso download
The most interesting report here is that savvy IT pros are not running 2012 on bare metal. They download the ISO to do one thing: Azure allows you to upload your own 2012 VHD (created from the ISO) and grants you free security updates for three years post-EOL as an incentive to migrate. As of , Microsoft no longer provides free