The temporary Internet file cache grows without a limit when a Silverlight application continues to run in Internet Explorer

When a Silverlight application makes Web service calls to Web resources without moving away from the current Web page, the temporary Internet file (TIF) cache will grow without a limit. Eventually, the hard disk will fill up. This issue occurs in Internet Explorer 7 and in Internet Explorer 6.

This issue occurs because the scavenger thread that empties the TIF cache does not run unless you browse to another page. If you remain on a single page that is running a Silverlight application, and a Silverlight application downloads Web content, Web resources are stored in the TIF cache. In this scenario the TIF cache will grow without a limit.

Security update information

To resolve this problem, install the most current cumulative security update for Internet Explorer. To install the most current update, visit the following Microsoft Web site: For more technical information about the most current cumulative security update for Internet Explorer, visit the following Microsoft Web site: Note This update was first included in security update 969897 (MS09-019). For more information, click the following article number to view the article in the Microsoft Knowledge Base:

Hotfix information

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 software update 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.

Prerequisites

To install this hotfix, you must have one of the following versions of Internet Explorer installed:

• Internet Explorer 7 for Windows Server 2008
• Internet Explorer 7 for Windows Vista
• Internet Explorer 7 for Windows Server 2003 Service Pack 2 (SP2)
• Internet Explorer 7 for Windows XP Service Pack 3 (SP3)
• Internet Explorer 6 for Windows XP Service Pack 2 (SP2) or for Windows XP Service Pack 3 (SP3)

Restart requirement

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

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

Registry information

To use one of the hotfixes in this package, you do not have to make any changes to the registry.

File information

The English version of this 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.

Internet Explorer 7 for x86-based versions of Windows Vista

Internet Explorer 7 for x86-based versions of Windows Server 2008, or Internet Explorer 7 for x86-based versions of Windows Vista SP1

Internet Explorer 7 for ia64-based versions of Windows Server 2008

Internet Explorer 7 for x64-based versions of Windows Vista

Internet Explorer 7 for x64-based versions of Windows Server 2008, or Internet Explorer 7 for x64-based versions of Windows Vista SP1

Internet Explorer 7 for x86-based versions of Windows Server 2003 SP2

Internet Explorer 7 for ia64-based versions of Windows Server 2003 SP2

Internet Explorer 7 for x64-based versions of Windows Server 2003 SP2

Internet Explorer 7 for x86-based versions of Windows XP SP3

Internet Explorer 6 for x86-based versions of Windows XP SP2

Internet Explorer 6 for x86-based versions of Windows XP SP3

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