Web-related applications may not work correctly after you install cumulative security update for Internet Explorer MS08-024 (KB947864)

On a computer that has cumulative security update for Internet Explorer MS08-024 (KB947864) installed, some Web-related applications may not work correctly. For example, you may experience one or more of the following symptoms:

• A licensed ActiveX control may disappear in Internet Explorer. This issue may occur if the license package (.lpk) file for the ActiveX control was downloaded by using the "Cache-Control:no-cache" HTTP header.
• When you use Internet Explorer to visit a Web page that contains a video, the video cannot be played.
• Calls to the UrlDownloadToCacheFile function return an empty cache file.
• Calls to the UrlDownloadToCacheFile function return a cache file that cannot be opened. Additionally, a memory leak may occur after these function calls.

Note You may also experience other symptoms that are not described here.

To resolve this problem, 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: For more information about how to install the hotfix files in a cumulative security update for Internet Explorer, click the following article number to view the article in the Microsoft Knowledge Base: Note This update was first included in security update 953838 (MS08-045). For more information, click the following article number to view the article in the Microsoft Knowledge Base:

Hotfix information for Windows Internet Explorer 7

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 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 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, visit the following Microsoft Web site: 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 run one of the following:

• Windows XP Service Pack 2
• Windows Server 2003 Service Pack 2
• Windows Vista
• Windows Vista Service Pack 1
• Windows Server 2008

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other previously released hotfixes.

Registry information

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

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 SP2, x86-based versions

Windows Server 2003 SP2, x86-based versions

Windows Server 2003 SP2, x64-based versions

Windows Server 2003 SP2, Itanium-based versions

Windows Vista, x86-based versions

Windows Vista, x64-based versions

Windows Vista SP1 or Windows Server 2008, x86-based versions

Windows Vista SP1 or Windows Server 2008, x64-based versions

Windows Server 2008, Itanium-based versions

Hotfix information for Microsoft Internet Explorer 6

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 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 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, visit the following Microsoft Web site: 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, the computer must run one of the following:

• Windows XP Service Pack 2
• Windows XP Service Pack 3
• Windows Server 2003 Service Pack 2

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other previously released hotfixes.

Registry information

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

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 SP2, x86-based versions

Windows XP SP3, x86-based versions

Windows Server 2003 SP2, x86-based versions

Windows Server 2003 SP2, x64-based versions

Windows Server 2003 SP2, Itanium-based versions

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

The symptoms that you may experience are not limited to those that are described in the "Symptoms" section. If any operation calls the UrlDownloadToCacheFile function, problems may occur. For example, the LPK download manager in Internet Explorer calls the UrlDownloadToCacheFile function. Therefore, you may have problems when you use the LPK download manager.

For more information about the URLDownloadToCacheFile function, visit the following Microsoft Web site:For more information about the Cache-Control header, visit the following Microsoft Web site: For more information, click the following article number to view the article in the Microsoft Knowledge Base: