Symptoms This article addresses common issues with automatic updates, including the following situations: Symptom You receive a message notifying you that Windows Defender or Endpoint Protection isn't monitoring your computer because the program's service stopped. Solution When you remove Internet security programs, your computer is unprotected.If you have problems installing Endpoint Protection after you remove existing Internet security programs, contact Windows Defender or Endpoint Protection support by submitting a case online (for more information, see How to Submit a Case Online).Updated: September 14, 2015Applies To: System Center 2012 R2 Endpoint Protection, System Center 2012 Configuration Manager, System Center 2012 Configuration Manager SP2, System Center 2012 R2 Configuration Manager, System Center 2012 Endpoint Protection SP1, System Center 2012 Endpoint Protection, System Center 2012 R2 Configuration Manager SP1With Endpoint Protection in Microsoft System Center 2012 Configuration Manager, you can use any of several available methods to keep antimalware definitions up to date on client computers in your hierarchy.
Windows Defender or Endpoint Protection works automatically with Microsoft Update to ensure that your virus and spyware definitions are kept up to date.
Only way I know of fixing it: downloading manual updates, which gets annoying over time.
Even after removing all traces of System Center 2012 from our AD network, when I uninstalled the client software from each user system, within a few hours (or post a reboot) the software would mysterious regenerate and come back. Uninstall: System Center 2012 Endpoint Protection Client.
Restarting the Microsoft Antimalware Service or the computer doesn't fix it.
The program silently fails to update until definitions are a week old, and then when I manually update, the green bar gets a third of the way to the end, resets and gets a quarter of the way to the end, and then fails with no error.