At this point we can go back to Windows update and run a check for updates, which should now no longer list the update as available, as it is now installed.
For users whose computers are not always on and connected, or users who utilize the sleep and resume functions on their laptops, these updates can often be missed, since the system typically updates between midnight and 6 a.m.
Under Compatibility mode, tick the “Run this program in compatibility mode for:” box and then select Windows 7 from the drop down menu, then click OK.
Now open command prompt as administrator and execute the file with the /disableoslimit flag on the end as shown below.
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.