FIX: Random messages may not be processed, and duplicate messages may be processed by the trigger rule when you use the Message Queuing Triggers service to process messages in Message Queuing 3.0

In Microsoft Message Queuing 3.0, you use the Message Queuing Triggers service to process messages in a queue. Under a heavy workload, you may experience the following symptoms:

• Random messages may not be processed and may remain in the queue.
• Duplicate messages may be processed by the trigger rule.

This problem occurs because the Message Queuing Triggers service incorrectly skips a message.

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. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

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, contact 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.

Prerequisites

To apply this hotfix, you must have Message Queuing 3.0 installed. Additionally, you must be running one of the following operating systems:

• Windows Server 2003 with Service Pack 1 (SP1)
• Windows Server 2003 with Service Pack 2 (SP2)

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 hotfix.

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.

Windows Server 2003 with SP1, x86-based versions

Windows Server 2003 with SP2, x86-based versions

Windows Server 2003 with SP1, x64-based versions

Windows Server 2003 with SP2, x64-based versions

Windows Server 2003 with SP1, Itanium-based systems

Windows Server 2003 with SP2, Itanium-based systems

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: