Important information regarding the recent Microsoft Anti-Malware Platform Update

As you may be aware, after our recent announcement regarding the Microsoft Anti-Malware Platform Update, the two stand-alone releases (KB2831312 and KB2831316) were temporarily removed from Microsoft Update on April 10. This was because of a detection logic issue that was discovered with the Windows Defender platform update made available to Windows 8 clients (see https://support.microsoft.com/kb/2781197). The Windows Defender update was being erroneously offered to clients that had the new FEP or SCEP platform updates applied, leading to installation failures of KB2781197 that were misleading as the update does not actually apply when FEP or SCEP have been updated to the latest platform.

This has been addressed and these updates will be restored on Wednesday April 17 (today).

The KB articles for these updates are as follows:

Stand-alone / Unmanaged Clients:

KB2831312 - An anti-malware platform update for stand-alone Forefront Endpoint Protection 2010 clients is available from Microsoft Update (https://support.microsoft.com/kb/2831312)

KB2831316 - An anti-malware platform update for stand-alone System Center 2012 Endpoint Protection Service Pack 1 clients is available from Microsoft Update (https://support.microsoft.com/kb/2831312)

Managed Clients (by Configuration Manager 2007 for FEP, or by System Center 2012 Configuration Manager for SCEP):

KB2827684 - An anti-malware platform update for Forefront Endpoint Protection 2010 clients is available from Microsoft Support (https://support.microsoft.com/kb/2827684)

KB2828233  - An anti-malware platform update for System Center 2012 Endpoint Protection Service Pack 1 clients is available from Microsoft Support (https://support.microsoft.com/kb/2828233)

As noted in the KB articles, these updates may require reboots during installation.

Note that managed customers (using Configuration Manager 2007 or System Center 2012 Configuration Manager) may also see failures when installing update KB2781197 on Windows 8 clients that have the FEP or SCEP platform update applied. These failures can be ignored and should cease now that the update KB2781197 detection logic has been revised.

J.C. Hornbeck | Knowledge Engineer | Microsoft GBS Management and Security Division

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