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FIX: Importing an .msi file may take a very long time or you may get a "Timeout expired" error

In BizTalk Server, you may see the following symptoms:
  • After you deploy many artifacts to the BizTalkMgmtDb database, re-importing an .msi file may take a very long time.
  • When you try to import a BizTalk application in BizTalk Administration, the import operation is unsuccessful. Additionally, you may receive an error message that resembles the following:

    Timeout expired. The timeout period elapsed prior to obtaining a connection from the pool. This may have occurred because all pooled connections were in use and max pool size was reached. (Microsoft.BizTalk.ExplorerOM)

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.

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.


To apply this hotfix, you must have BizTalk Server 2006 R2 or BizTalk Server 2009 installed.

Restart requirement

You do not have to restart the 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.
For BizTalk Server 2006 R2
File nameFile versionFile sizeDateTimePlatform
For BizTalk Server 2009
File nameFile versionFile sizeDateTimePlatform
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
After you apply this hotfix and then re-import an .msi file that contains a map, BizTalk Server checks whether the map is referenced by a send port. If the map is not referenced by a send port, no send-port-related data is populated. Therefore, performance improves.

For more information about the BizTalk Server hotfixes, click the following article number to view the article in the Microsoft Knowledge Base:
2003907 Information on BizTalk Server hotfixes
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

Article ID: 954814 - Last Review: 08/24/2010 03:50:00 - Revision: 4.0

  • Microsoft BizTalk Server 2006 R2 Standard Edition
  • Microsoft BizTalk Server 2006 R2 Enterprise Edition
  • Microsoft BizTalk Server 2006 R2 Developer Edition
  • Microsoft BizTalk Server 2006 R2 Branch Edition
  • Microsoft BizTalk Server 2009 Branch
  • Microsoft BizTalk Server 2009 Developer
  • Microsoft BizTalk Server 2009 Enterprise
  • Microsoft BizTalk Server 2009 Standard
  • kbsurveynew kbautohotfix kbexpertiseinter kbhotfixserver kbqfe KB954814