Forefront Client Security anti-malware client update: March 2011

Issues that this hotfix package resolves

Hotfix information

A supported hotfix is available from Microsoft.

Note This hotfix is available from Microsoft Update and from Windows Server Update Services (WSUS). If you want to obtain the hotfix for deployment by using a different method, follow these steps:

1. Visit the following Microsoft Update Catalog website:

   http://catalog.update.microsoft.com/v7/site/Home.aspx

2. Type 2508823 in the Search box, and then click Search.

3. Click Add to add the hotfix to the basket.

4. Click Download.

5. Click Browse, specify a folder for the file that you want to download, and then click OK.

6. Click Continue, and then click I Accept to accept the Microsoft Software License Terms.

7. When the update is downloaded to the folder that you specified, click Close.

Prerequisites

There are no prerequisites for installing this hotfix.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix replaces the anti-malware client that is deployed by using the Forefront Client Security deployment package (1.0.1725.0).

2394439 Forefront Client Security deployment package (1.0.1728.0): October 2010This hotfix replaces the following hotfixes:

2394433 Forefront Client Security antimalware client update: October 2010

2459065 Real-time protection fails on Windows 2000 after you apply the Forefront Client Security October 2010 update

979536 Forefront Client Security anti-malware client update: April 2010

976668 Forefront Client Security anti-malware client update: December 2009

971026 A hotfix is available to resolve some problems with the Forefront Client Security anti-malware client

952265 Data corruption may occur on a computer that has Forefront Client Security installed

938054 A hotfix is available to resolve some problems with the Forefront Client Security client

956280 The Forefront Client Security kernel-mode mini-filter unloads when you browse a network file share that contains many malicious files

File information

The English version of this update has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

Forefront Client Security, x86-based versions

Forefront Client Security, x64-based versions

Known IssuesMicrosoft has identified an issue when this update is installed on Windows Vista, Windows Server 2008, Windows 7, or Windows Server 2008 R2, that may cause the antimalware agent to be removed when using the Windows install updates and shut down feature to apply this update. For more information on this issue see the following article:

2524280 Antimalware agent is removed after you apply Forefront Client Security March 2011 update when using install updates and shut down