Tablet PC Input Panel cannot be moved after you install update 2973201 in Windows 7 or Windows Vista

Applies to: Windows 7 Service Pack 1Windows 7 EnterpriseWindows 7 Home Premium More

Symptoms


After you install update 2973201 on a Windows 7-based or Windows Vista-based tablet, you cannot move the Tablet PC Input Panel window by using a stylus or touch input. However, you can move the window by using a mouse.

Note The Windows on-screen keyboard (osk.exe) is unaffected by this issue.

How to obtain the hotfixes


To resolve this issue, we have released hotfixes for Windows 7 and Windows Vista.

Before you install the hotfixes, check the prerequisites for the hotfixes.



Note We recommend that you install update 2982791 that more comprehensively fixes the problem for all applications than the hotfixes.

Hotfix information for Windows 7 and Windows Vista

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.

Prerequisites

To apply this hotfix, you must be running Windows 7 Service Pack 1 (SP1) or Windows Vista Service Pack 2 (SP2).

For more information about how to obtain Windows 7 SP1, click the following article number to view the article in the Microsoft Knowledge Base:
976932 Information about Service Pack 1 for Windows 7 and for Windows Server 2008 R2

For more information about how to obtain Windows Vista SP2, click the following article number to view the article in the Microsoft Knowledge Base:
948465 Information about Service Pack 2 for Windows Vista and for Windows Server 2008

Registry information

To apply this hotfix, you do not have to make any changes to the registry.

Restart requirement

You may have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

Status


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

More Information


This issue occurs because some integrity level information is not initialized correctly for specific message types that originate from pen or touch input.

For more information about how to open and move Tablet PC Input Pane, go to the following Microsoft website:

For more information about software update terminology, click the following article number to go to the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates