Microsoft KB Archive/326860

= FIX: Access Violation in Microsoft XML 4.0 When Service Pack 1 Performs Tranforms on Cached XML Documents =

Article ID: 326860

Article Last Modified on 11/15/2007

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APPLIES TO


 * Microsoft XML Core Services 4.0 Service Pack 1

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This article was previously published under Q326860



SYMPTOMS
Microsoft XML (MSXML) may experience random failures (access violations) when MSXML 4.0 Service Pack 1 (SP1) performs transforms on a free-threaded XML Document Object Model (DOM) document from multiple threads simultaneously. This problem is more likely to occur on multi-processor computers, and to occur under stress.



CAUSE
An internal part of the free-threaded XML DOM document is prematurely destroyed when MSXML 4.0 SP1 performs a transform. This issue occurs when MSXML cleans up a stack frame and, during this operation, uses a node attribute as a template parameter. Re-using this node may cause random failures because of the use of freed memory or the use of corrupted data.



RESOLUTION
A supported hotfix is now 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 service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or 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. To create a separate service request, visit the following Microsoft Web site:

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

The English version of this fix 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.

  Date         Time   Version      Size (bytes)  File name --  06-Sep-2002  16:44  4.10.9405.0     1,230,848  Msxml4.dll



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

Keywords: kbhotfixserver kbqfe kbbug kbfix kbmsxml400fix kbqfe KB326860

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