Internet Explorer loses HTTP connections when you close a webpage before you receive an XHR response


Consider the following scenario:
  • You use Internet Explorer 7, Internet Explorer 8, or Internet Explorer 9.
  • You make an asynchronous XMLHttpRequest (XHR) object request from a webpage.
  • You close the webpage before you receive a response.

In this scenario, if the response length (header together with body) is greater than 1 kilobyte (KB), Internet Explorer loses the HTTP connections.


Update information

To resolve this issue, install the most recent cumulative security update for Internet Explorer. To do this, go to Microsoft Update.

For technical information about the most recent cumulative security update for Internet Explorer, go to the following Microsoft website:Note This update was first included in security update 2888505.

For more information, click the following article number to view the article in the Microsoft Knowledge Base:
2888505 MS13-088: Cumulative Security Update for Internet Explorer: November 12, 2013


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


See the terminology Microsoft uses to describe software updates.

Article ID: 2905733 - Last Review: Nov 13, 2013 - Revision: 1