Consider the following scenario. In a Microsoft BizTalk Server 2006 R2 environment, you use a schema together with a circular reference in an orchestration. You expose the orchestration as a Microsoft Windows Communication Foundation (WCF) service by using the BizTalk WCF Service Publishing Wizard. Then, you browse to the WCF service. In this scenario, the WCF service that is generated may cause the Internet Information Services (IIS) worker process to crash.
This problem occurs because the schema is imported repeatedly because of the circular reference. Therefore, the IIS worker process consumes more memory until the IIS worker process crashes.
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.
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, submit a request to 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:
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.
You must have BizTalk Server 2006 R2 installed to apply this hotfix.
You do not have to restart the computer after you apply this hotfix.
You do not have to change the registry.
Hotfix replacement information
This hotfix does not replace a previously released hotfix.
This hotfix contains only those files that are required to correct the issues that this article lists. This hotfix may not contain all the files that you must have to fully update a product to the latest build.
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.
Note Because of file dependencies, the most recent hotfix that contains these files may also contain additional files.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
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
Microsoft BizTalk Server 2006 R2 Standard Edition, Microsoft BizTalk Server 2006 R2 Developer Edition, Microsoft BizTalk Server 2006 R2 Enterprise Edition, Microsoft BizTalk Server 2006 R2 Branch Edition