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Consider the following scenario:

  • You run an application that uses the Multichannel Engine of Microsoft Customer Care Framework (CCF) 2009.

  • The application calls the RegisterContainer or RegisterNestedContainer method. The application uses the method to dynamically create Multichannel Engine nested-containers.

  • A parent view that contains the nested containers is not unregistered.

In this situation, the application does not free resources of the nested containers. For example, the application does not free any WinForm controls.


This issue occurs because the Multichannel Engine API cannot delete nested containers that are created dynamically.


Hotfix information

A supported hotfix is now available from Microsoft. However, it is intended to correct only the problem that this article describes. Apply it only to systems that are experiencing this specific problem.

To resolve this problem, contact Microsoft Customer Support Services to obtain the hotfix. For a complete list of Microsoft Customer Support Services telephone numbers and information about support costs, visit the following Microsoft Web site: 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 usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.


To apply this hotfix, you must have CCF 2009 Service Pack 1 (SP1) installed.

Restart requirement

You do not have to restart the computer after you apply the hotfix if the affected files are not being used.

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.

Post-installation information

After you apply this hotfix, the UnRegisterNestedContainer method for the Microsoft.Ccf.Mce.Core.IEngine interface and for the Microsoft.Ccf.Mce.Engine.MceEngine class is available. You can use this method to free memory resources of nested controls. 


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.


For more information about Multichannel Engine, visit the following Microsoft Developer Network (MSDN) website:

General information about Multichannel EngineFor more information about how to create nested containers dynamically, visit the following MSDN website:

General information about how to create nested containers dynamically

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