Recently I covered how to install Microsoft Security Essentials in Windows Server 2012 R2, however after performing a Windows update it failed to install with error 0x8004FF04.
Here I will discuss why this happens and then cover how to resolve this problem and update Microsoft Security Essentials manually.
This post is aimed toward those that have knowingly installed Microsoft Security Essentials on an unsupported operating system such as Windows Server 2012 R2 and want to update it.
In this example I first downloaded and installed the latest version of Microsoft Security Essentials from Microsoft by following these steps.
This installed version 4.8 of Microsoft Security Essentials.
After running Windows update it found KB3140527 which came out 23/02/2016 and was an update for Microsoft Security Essentials, version 22.214.171.124 to be exact as shown below.
is a much better choice among freeware AV packages.
You would have noticed, that it updates its virus definitions on first launch and it could be a bit problem on a PC, which is not connected to Internet.
But you can download its offline updates appropriate for your version of Windows. The update files are executable files and can be installed easily without much interaction.
To verify the status MSE: Open Microsoft Security Essentials, click Update, and then see the virus and anti-malware definitions status.
This means that when I did this, the download through the website was not the most up to date version.