I got this through the contact form. It's a jargon-free guide to computer and internet security. It provides a detailed explanation on how to properly secure your computer and internet experience, and best of all, it uses simple and understandable language, lowering the bar for everyone to secure themselves against malware, ransomware and other malicious attacks.
Although unsupported, it is possible to install Microsoft Security Essentials on a Windows Server 2012.
To do this, set the compatibility of the downloaded file to Windows 7, then start that file with the parameter /disableoslimit.
The installation goes without a problem, and as far as I can tell, there are no compatibility issues.