Article ID: 820551 - Last Review: July 24, 2007 - Revision: 7.9

Access Violation Occurs in the MGM Component on a Windows Server 2003-Based VPN Server

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SYMPTOMS

An access violation in the Multicast Group Manager (MGM) component may occur on a Windows Server 2003-based computer that is configured as a remote access virtual private network (VPN) server, where Internet Group Membership Protocol (IGMP) is enabled for multicast support.

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RESOLUTION

Hotfix Information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support (http://support.microsoft.com/contactus/?ws=support)

Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

No prerequisites are required.

Restart Requirement

You must restart your computer after you apply this hotfix.

Hotfix Replacement Information

This hotfix does not replace any other hotfixes.

File Information

The English version of this hotfix has the file attributes (or later) 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 tool in Control Panel.

   Windows Server 2003

   Date         Time   Version            Size    File name
   --------------------------------------------------------------
   19-May-2003  20:52  5.2.3790.31       103,936  Rtm.dll          
   09-May-2003  05:07                        211  Branches.inf
   19-May-2003  21:08                     10,091  Kb820551.cat
   19-May-2003  20:54                        354  Updatebr.inf
   19-May-2003  20:55                      5,011  Update_rtmqfe.inf

   Windows Server 2003 64-bit Edition

   Date         Time   Version            Size    File name
   --------------------------------------------------------------
   19-May-2003  20:47  5.2.3790.31       293,376  Rtm.dll          IA-64
   19-May-2003  20:52  5.2.3790.31       103,936  Wrtm.dll         x86
   09-May-2003  05:07                        211  Branches.inf
   19-May-2003  21:08                     10,444  Kb820551.cat
   19-May-2003  20:56                        354  Updatebr.inf
   19-May-2003  20:56                      5,261  Update_rtmqfe.inf

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