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A memory leak occurs when you open a Web page that contains a circular reference in an iframe
Article ID: 975736 - View products that this article applies to.
Consider the following scenario:
This leak can also occur if the iframe loads a page containing a Telerik RadGrid control for ASP.NET. In this scenario, you notice that the Private Bytes increase by 3 MB for every window.open operation. After some open and close operations, the system performance decreases significantly.
To monitor system performance, use Performance Monitor (Perfmon.exe). In Performance Monitor, check the Private Bytes for Internet Explorer.
Note If you browse to the page hosted in the iframe directly, then the issue does not occur.
Security update informationTo resolve this problem, install the most recent cumulative security update for Internet Explorer. To install the most recent updates, visit the following Microsoft website:
http://update.microsoft.comFor more technical information about the most recent cumulative security update for Internet Explorer, visit the following Microsoft website:
Note This update was first included in security update 2416400 (MS10-090). For more information, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/2416400/ )MS10-090: Cumulative security update for Internet Explorer
Registry informationImportant This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
322756After you install the update for Internet Explorer 6 and 7 on the computer, you must add a registry value to enable the fix. To do this, follow these steps:
(http://support.microsoft.com/kb/322756/ )How to back up and restore the registry in Windows
The problem does not occur in Internet Explorer 8 or in Internet Explorer 9, However, with either of the Internet Explorer versions installed, if you use applications that host the WebBrowser control(WebOC) or MSHTML browse to the page, then the problem still occurs. Such applications can opt into the fix by adding a registry entry. To do this, follow these steps:
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about the window.open method, visit the following Microsoft website:
http://msdn.microsoft.com/en-us/library/ms536651(VS.85).aspxFor more information about the IFRAME element, visit the following Microsoft website:
http://msdn.microsoft.com/en-us/library/ms535258(VS.85).aspxFor more information about Circular references, visit the following Microsoft website
The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.
Article ID: 975736 - Last Review: June 13, 2012 - Revision: 10.0