Microsoft KB Archive/926840

= Internet Explorer 6 may close unexpectedly, and an access violation may occur in the Mshtml.dll file when you close a pop-up window =

Article ID: 926840

Article Last Modified on 11/15/2007

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APPLIES TO


 * Microsoft Internet Explorer 6.0, when used with:
 * Microsoft Windows XP Service Pack 2

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Important This article contains information about how to modify the registry. Make sure that you back up the registry before you modify it. Make sure that you know how to restore the registry if a problem occurs. For more information about how to back up, restore, and modify the registry, click the following article number to view the article in the Microsoft Knowledge Base:

256986 Description of the Microsoft Windows registry



SYMPTOMS
When you use Microsoft Internet Explorer 6 on a computer that is running Microsoft Windows XP with Service Pack 2 (SP2), an access violation may occur in the Mshtml.dll file. Internet Explorer may close unexpectedly. This problem typically occurs when you close a pop-up window.

This problem occurs after you install one of the following items:
 * The hotfixes that are contained in security update 918899 (MS06-042)
 * An Internet Explorer hotfix that is released after security update 918899

For example, this problem occurs after you install the hotfix files that are contained in update 923996 or after you install the hotfix files that are contained in security update 922760 (MS06-067). This problem does not occur if you have not installed any Internet Explorer hotfixes.



Cumulative security update information
Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require that you reinstall the operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.To resolve this problem immediately, follow these steps:  Install the hotfix files in the most current cumulative security update for Internet Explorer. For more technical information about the most current cumulative security update for Internet Explorer, visit the following Microsoft Web site:

http://www.microsoft.com/technet/security/current.aspx

For more information about how to install hotfixes that are included in a cumulative security update for Internet Explorer, click the following article number to view the article in the Microsoft Knowledge Base:

897225 How to install hotfixes that are included in updates and cumulative security updates for Internet Explorer

Note This hotfix was first included in security update 928090 (MS07-016).

For more information, click the following article number to view the article in the Microsoft Knowledge Base:

928090 MS07-016: Cumulative security update for Internet Explorer

 After you install the fix, you must add the  registry key in the registry. To do this, follow these steps:  Click Start, click Run, type Regedit, and then click OK. Locate and then click the following registry subkey:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl

 On the Edit menu, point to New, and then click Key. Type FEATURE_ADJUST_POPUP_UNLOAD_BEHAVIOR_KB926840, and then press ENTER. Right-click FEATURE_ADJUST_POPUP_UNLOAD_BEHAVIOR_KB926840, point to New, and then click DWORD Value.</li> Type iexplore.exe, and then press ENTER.</li> Double-click iexplore.exe, type 1 in the Value data box, and then click OK.</li> Exit Registry Editor.</li></ol> </li></ol>

Hotfix information
Apply this hotfix if you cannot install the current cumulative security update for Internet Explorer.

A supported hotfix is now 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 service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or 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. To create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Prerequisites
The computer must be running Windows XP SP2 to install this fix.

Restart requirement
You must restart the computer after you apply this hotfix.

Hotfix replacement information
This hotfix is replaced by the hotfix files in security update 928090 and by later cumulative security updates for Internet Explorer.

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.

Registry key information
After you install the hotfix, you must add the  registry key that is described in step 2 of the &quot;Cumulative security update information&quot; section.

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STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.

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MORE INFORMATION
For more information about security update MS06-042, click the following article number to view the article in the Microsoft Knowledge Base:

918899 MS06-042: Cumulative security update for Internet Explorer

For more information about hotfix 923996, click the following article number to view the article in the Microsoft Knowledge Base:

923996 When you visit a Web page that uses a custom pop-up object, Internet Explorer 6 closes unexpectedly

For more information about the standard terminology that is used to describe Microsoft software updates, 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

Keywords: kbwinxppresp3fix kbwinxpsp3fix kbexpertiseinter kbfix kbbug kbhotfixserver kbqfe kbpubtypekc KB926840

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