May 23, 2015

Division of Information Technology Help Desk

Problem with Microsoft Forefront Client Security (FCS) Client Update on 3/9/2011

On Wednesday, March 9, 2011, the Office of Information Technology (OIT) received reports that there was a problem with the update for Microsoft Forefront Client Security (FCS) anti-malware client released on 3/9/2011. The affected update, KB2508823, was included in the regularly scheduled Patch Tuesday updates. In some cases the update fails to install correctly and the existing Forefront client is disabled. This leaves the computer without anti-virus protection.

This does not affect Microsoft Security Essentials client software.

Microsoft posted a warning about this update here: Microsoft FCS v1 March 2011 Update

The problem is limited to Vista and Windows 7 systems that installed the updates as part of the computer shutdown process. If the updates were installed in any other way, the ForeFront patch was loaded properly. Contrary to early reports, ForeFront is not removed on affected machines, only deactivated.

At 10:00 a.m. on Thursday, March 10, 2001, Microsoft changed the designation on the patch from Critical to Optional. If a system downloaded updates before 10 a.m. on that date, but has not yet installed them, they should complete the update process before shutting down.

Microsoft has a hotfix available to remedy the problem with affected machines. Please see Forefront Client Security anti-malware client update: March 2011 for more information. Please contact the OIT Help Desk at 301.405.1500 Monday - Friday 8:00 a.m. - 5:00 p.m. if you have any further questions.

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