Microsoft KB Archive/830639

= Access violation occurs in the MSMQ service =

Article ID: 830639

Article Last Modified on 2/21/2007

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APPLIES TO


 * Microsoft Windows 2000 Server
 * Microsoft Windows 2000 Professional Edition
 * Microsoft Windows 2000 Advanced Server

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SYMPTOMS
When you run the Microsoft Message Queuing (MSMQ) service, you may receive an &quot;Access Violation&quot; error message, and a message that is similar to the following may be logged in the event log: Source: Service Control Manager

Event Category: None

Event ID: 7031

Date:

Time:

User: N/A

Computer:

Description: The Message Queuing service terminated unexpectedly. It has done this 1 time(s).



CAUSE
This problem may occur when one of the following conditions is true:
 * You use a network address translation (NAT) firewall. Message Queuing cannot be used with a NAT firewall.
 * Your computer changes its IP address when you start your computer.
 * You have multiple clients that use same Message Queuing GUID because the operating system was cloned or ghosted without using the System Preparation tool (Sysprep.exe).

Message Queuing transactional messages (exactly one time and in-order delivery) are based on sequence IDs (SEQIDs). In this case, the SEQID was never sent from the computer that is associated with the SEQID. Instead of rejecting the acknowledgement as not valid, the sending system tries to process the acknowledgment as valid. This corrupts internal Message Queuing lists and eventually causes the access violation. The hotfix that is described in the &quot;Resolution&quot; section of this article rejects the acknowledgement. Therefore, it prevents the access violation. This hotfix only prevents the access violation.



Hotfix Information
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that this article describes. Apply it only to systems that are experiencing this specific problem.

To resolve this problem, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

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

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

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 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.   Date         Time   Version     Size    File name ---  16-Oct-2003  17:28  5.0.0.778  281,360  Mq1repl.dll 20-Sep-2003 17:23  5.0.0.778   14,096  Mq1sync.exe 02-Oct-2003 19:21  5.0.0.785   76,016  Mqac.sys 16-Oct-2003 17:28  5.0.0.783  217,360  Mqads.dll 20-Sep-2003 17:23  5.0.0.761   25,360  Mqbkup.exe 16-Oct-2003 17:28  5.0.0.785   76,560  Mqdscli.dll 16-Oct-2003 17:28  5.0.0.773   42,256  Mqdssrv.dll 20-Sep-2003 17:23  5.0.0.759   98,064  Mqmig.exe 16-Oct-2003 17:28  5.0.0.759  265,488  Mqmigrat.dll 16-Oct-2003 17:28  5.0.0.740  222,480  Mqoa.dll 16-Oct-2003 17:28  5.0.0.784   10,000  Mqperf.dll 16-Oct-2003 17:28  5.0.0.786  433,936  Mqqm.dll 16-Oct-2003 17:28  5.0.0.778  102,672  Mqrt.dll 16-Oct-2003 17:28  5.0.0.776   70,928  Mqsec.dll 16-Oct-2003 17:28  5.0.0.783  400,656  Mqsnap.dll 16-Oct-2003 17:28  5.0.0.762   23,824  Mqupgrd.dll 16-Oct-2003 17:28  5.0.0.782  110,864  Mqutil.dll 16-Oct-2003 17:28  5.0.0.748   64,784  Msmq.cpl 09-Oct-2003 00:18  5.4.1.0      6,656  Spmsg.dll 09-Oct-2003 00:19  5.4.1.0    140,800  Spuninst.exe 09-Oct-2003 00:19  5.4.1.0     22,016  Spcustom.dll



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.



MORE INFORMATION
For more information about how hotfix packages are named, click the following article number to view the article in the Microsoft Knowledge Base:

816915 New file naming schema for Microsoft Windows software update packages

For more information, 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

Keywords: kbhotfixserver kbqfe kbwin2000presp5fix kbfix kbbug KB830639

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