Forefront virus definitions not updating
This FAQ is for computer users whose IT administrator has deployed Windows Defender or Endpoint Protection to their managed computer.
The content here might not apply to other antimalware software.
Keeping Microsoft Security Essentials up-to-date ensures that your computer is protected at all times and that the latest viruses and spyware variations will be detected during scanning.
Of course, you could just leave Microsoft Security Essentials to update its definitions on its own and, obviously, it is advisable you do so.
The installer contains the complete, up-to-date anti-malware definitions for Microsoft Security Essentials, deploying the scanning engine (mpengine.dll), along with other files, such as mpasbase.vdm, mpasdlta.vdm, mpavbase.vdm, mpavdlt.vdm,
Please note that Microsoft Security Essentials can only be installed on Windows Vista and Windows 7, as on more recent Windows iterations it is superseded by Windows Defender.
The important thing is to make sure that you have the “allow installation and restarts” option set to Yes in order to see things happen right away.
If your environment has maintenance windows established, leave it as is and wait for the maintenance windows to occur.
You may need to download and run a cleanup utility for your previous security application in order for it to be completely removed.
Even if you recreate using the wizard it still only defaults to Forefront Endpoint Protection 2010 for the product choice.
The Microsoft Security Essentials Definition Updates deploys a package containing the latest virus signatures for the latest release of Microsoft Security Essentials.
Help - If we review our Endpoint Protection on the target machine, we are able to see the policy has been applied.
When we look at this policy we are able to see that indeed it references our 1) SCEP2012 Standard Desktop (Outlook 2010/2013) named policy and 2) the exclusions.