MSE on Windows Server 2012 R2

I wanted a simple, free, and non-intrusive anti-virus solution for a Windows Server 2012 File Server I was installing. It was sitting behind a firewall, and on a network with fully protected machines, but I didn’t want to leave it unprotected.

So I found an article about using Microsoft Security Essentials, now it’s not officially supported, and only meant to be used on Windows 7 these days, but these steps get it working, and it’s running really well. So if you want to give it a go, follow this:


  • Download Microsoft Security Essentials, whether it be 32 bt or 64 bit, I’ve only tried 64 bit but I can’t see why 32 bit wouldnt work?
  • Move the file to an easier location, a temp directory on the root of the C Drive is probably easiest (remember to remove the file/directory after installation)
  • Right Click on the “mseinstall.exe”
  • Go to Properties
  • Click on the “Compatibility” tab
  • Tick the box for “Run this program in compatibility mode for:” and select Windows 7
  • Open a Command Prompt as Administrator
  • cd to your Directory
  • The Run “mseinstall /disableoslimit” and follow the installer prompts to install MSE on your Windows Server 2012

That’s it, super simple, and easy to do. It will open up and update, and then run a scan, and you’re all done.