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Article ID: 2670342 - Last Review: September 4, 2013 - Revision: 3.0

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This article describes the Microsoft Lync Server 2010, Group Chat issues that are fixed in the cumulative update that is dated February 2012.
This article describes the following items about the update package:
  • The issues that the update package fixes.
  • The prerequisites for installing the update package.
  • Whether you must restart the computer after you install the update package.
  • Whether the update package is replaced by any other update package.
  • Whether you must make any registry changes.
  • The files that the update package contains.


Issues that this cumulative update fixes

This cumulative update fixes the following issues:
  • 2666342  ( ) The Channel service stops when a user signs in to a Group Chat client in Lync Server 2010, Group Chat
  • 2666341  ( ) A user does not receive an invitation when the user is added to a distribution list that is a member of a chat room in Lync Server 2010, Group Chat
  • 2679346  ( ) You cannot search for a user when you try to add the user to a chat room in the Lync Server 2010 Group Chat Administrator Tool
This update also fixes the issues that are described in the following Microsoft Knowledge Base articles:

  • 2514984   ( / ) Description of the cumulative update for Lync Server 2010, Group Chat: November 2011
  • 2571550   ( / ) Description of the update for Lync Server 2010 Group Chat: July 2011
  • 2500447   ( / ) Description of the update for Lync Server 2010 Group Chat: April 2011


Update package information

The following file is available for download from the Microsoft Download Center:
Collapse this imageExpand this image
Download the MgcServer.msp package now. (
Release Date: February 2012

For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:
119591  ( ) How to obtain Microsoft support files from online services
Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.


There are no prerequisites for applying this cumulative update.

Restart requirement

You may have to restart the computer after you apply this cumulative update.

Replacement information

This update replaces the following previously released update

2514984  ( ) Description of the cumulative update for Lync Server 2010, Group Chat: November 2011

Registry information

To use one of the updates in this package, you do not have to make any changes to the registry.

Update package installation information

Install this update on the Lync Server 2010, Group Chat server. To do this, follow these steps:
  1. Make sure that the Lync Server 2010, Group Chat features are installed, configured, and functioning correctly. A Lync Server 2010, Group Chat server includes a Channel server, a Lookup server and a Compliance server.
  2. Stop the Channel and Lookup services.
  3. Apply this update by running the MgcServer.msp file on all the computers that have the Group Chat server role installed.
  4. On the Lync Server 2010, Group Chat server, run the Server Config tool by using one of the following methods:

    Command prompt
    • At a command prompt, type the following command and then press Enter to silently upgrade the database versions:
      %programfiles%\Microsoft Lync Server 2010\Group Chat Server\serverconfigtool.exe /s
    Start menu
    • Click Start, click All Programs, select Administrative Tools, and then select Microsoft Lync Server 2010, Group Chat.
  5. Click Yes when you receive the following message. The Server Config tool then upgrades the existing Group Chat database schema. Additionally, the Server Config tool changes the configuration files of the server to reflect these changes.
    You must have read/write permission to the server's configuration files to complete this task.
    Note You must shut down all the Group Chat servers before you perform this upgrade.
  6. Restart the Channel and Lookup services, and then restart the Compliance server.

File information

This update may not contain all the files that you must have to fully update a product to the latest build. This update contains only the files that you must have to correct the issues that are listed in this article.

After the update is installed, the global version of this update has the file attributes, or a later version of the file attributes, that are listed in the following table:
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
File_groupchatconsole.admNot Applicable8,59903/29/1115:40Not Applicable


For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684  ( ) Description of the standard terminology that is used to describe Microsoft software updates

Applies to
  • Microsoft Lync Server 2010, Group Chat
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