You need to enable Microsoft Update, so that the system will be able to install updates for products other than the core Windows operating system, which includes Endpoint Protection.
The instructions below are for Windows 8.1 and Server 2012R2, however similar instructions apply to Windows 8 and Windows 7.
System Center Endpoint Protection will then update automatically without any problems, and manual updates will also work.
Article ID: 261
Last updated: 02 Jan, 2014
Posted: 24 Dec, 2013 by Andrew Sharrad
Updated: 02 Jan, 2014 by Andrew Sharrad