FIX: A paged pool memory leak occurs on a touch screen device that is running Windows 7 Service Pack 1

Applies to: Windows 7 Service Pack 1


Consider the following scenario:
  • You have a Windows 7 Service Pack 1-based device that uses a touch screen monitor.
  • You start Internet Explorer, and then you open any webpage.
  • You select a text string on the webpage by double-clicking or touching the text string.
  • You keep the text string in the selected state.
In this scenario, a page pool leak occurs. Additionally, page pool memory allocation errors occur and the device stops responding (hangs).


This problem occurs because of a leak in the pool memory that is used by advanced local procedure call (ALPC) messages between the Tiptsf.dll and Tipskins.dll files.


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 the problem described in this article. 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, go to the following Microsoft website: 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 Service Pack 1 for Windows 7 installed.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any previously released hotfix.


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