FIX: You may lose system resources during the life of some Windows Presentation Foundation applications


In some Microsoft Windows Presentation Foundation applications, you may lose system resources during the life of the application. Additionally, you may see a decrease in the performance of the computer.

If you examine the Private Bytes value of the application process in Performance Monitor when this problem occurs, the value keeps growing and never decreases.


Applications that do not immediately display visual resources may slowly run out of system resources when the visual resources are continually displayed during the life of the application.


Hotfix information

This hotfix deletes the internal Inflated event. This hotfix replaces the internal Inflated event by using an internal list of weak references.

A supported hotfix is now available from Microsoft. However, it is intended to correct only the problem that is described in this article. Apply it only to systems that are experiencing this specific problem. This hotfix may 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 immediately, 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:Note 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.


You must have the Microsoft .NET Framework 3.5 Service Pack 1 (SP1) installed to apply this hotfix.

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.
Windows XP and Windows Server 2003, x86-based version

File nameFile versionFile sizeDateTimePlatform
Windows XP and Windows Server 2003, x64-based version

File nameFile versionFile sizeDateTimePlatform
Windows Vista and Windows Server 2008, x86-based version

File nameFile versionFile sizeDateTime
Windows Vista and Windows Server 2008, x64-based version

File nameFile versionFile sizeDateTime


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

More Information

When a DeferredResourceReference reference is used by a ResourceReferenceExpression class, the internal Inflated event causes a strong reference to be held to the expression. This keeps the whole visual tree from being collected by the Garbage Collector after the references are removed from the tree if the DeferredResourceReference reference is never inflated.

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

Makale No: 967328 - Son İnceleme: 25 Mar 2009 - Düzeltme: 1

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