Microsoft KB Archive/307206

= MSMQ: Message Queuing Service May Return Access Violations If There Are Multiple Connected Networks =

Article ID: 307206

Article Last Modified on 10/6/2005

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APPLIES TO


 * Microsoft Message Queue Server 1.0

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This article was previously published under Q307206



SYMPTOMS
The Message Queuing service can return an access violation when there are multiple Message Queuing Connected Networks that are defined in the Message Queuing enterprise.



CAUSE
The Message Queuing code mistakenly calculates a single byte for an internal list instead of the proper number of bytes according to the number of Connected Networks that are defined. This causes an overlay problem that corrupts other data that causes intermittent access violations in the Message Queuing service.



RESOLUTION
The code has been corrected to properly allocate lists of the proper size when there is more than one Connected Network.

A supported fix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Apply it only to computers that are experiencing this specific problem. This fix may receive additional testing. Therefore, if you are not severely affected by this problem, Microsoft recommends that you wait for the next Windows NT 4.0 service pack that contains this hotfix.

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

http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS

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 typical support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

The English version of this fix should have the following file attributes or later:

  Date           Time   Version   Size    File name   Platform 14-Feb-2001   05:04            11Kb    Crdbsp7.sql     x86 14-Feb-2001   05:03            20Kb    Mq2ndnd.exe     x86 14-Feb-2001   05:04   319      60Kb    Mqac.sys        x86 14-Feb-2001   04:40   319      34Kb    Mqcertui.dll    x86 14-Feb-2001   04:40   319      34Kb    Mqdbmgr.dll     x86 14-Feb-2001   04:40   319      58Kb    Mqdscli.dll     x86 14-Feb-2001   04:40   319      56Kb    Mqdsrv.dll      x86 14-Feb-2001   04:40   319     222Kb    Mqis.dll        x86 14-Feb-2001   04:40   319      16Kb    Mqkeyhlp.dll    x86 14-Feb-2001   04:40   319     139Kb    Mqoa.dll        x86 14-Feb-2001   04:40   319       9Kb    Mqperf.dll      x86 14-Feb-2001   04:40   319     494Kb    Mqqm.dll        x86 14-Feb-2001   04:40   319     108Kb    Mqrt.dll        x86 14-Feb-2001   04:40   319   1,789Kb    Mqsetup.exe     x86 14-Feb-2001   04:40   319      14Kb    Mqsvc.exe       x86 14-Feb-2001   04:40   319     105Kb    Mqutil.dll      x86 14-Feb-2001   04:40   319      61Kb    Msmq.cpl        x86



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.



MORE INFORMATION
A Connected Network is a group of computers that can communicate directly between each other by using a native protocol, such as IP, IPX or &quot;foreign&quot;. An examination of the user dump shows an overlay of an increasing hexadecimal sequence (x01, x02, x03, and so forth) instead of the expected data. The expected data is most likely to be the header of a message that contains pointers. A register with either this sequence or zero is the most frequent symptom.

Keywords: kbfix kbqfe kbprb KB307206

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