Internet Explorer 7 may exit unexpectedly when multiple tabs are open, and you close a tab that contains a non-HTML file

When multiple tabs are open in Internet Explorer 7, and you close a tab that contains a non-HTML file, Internet Explorer may exit unexpectedly.

This problem occurs when the Yahoo! toolbar is installed, and the version of the toolbar is between 6.0.0.0 and 6.3.4.0.

This problem occurs because of a timing issue.

To resolve this problem, install the following security updates:

• MS07-016: Cumulative security update for Internet Explorer
• MS07-027: Cumulative security update for Internet Explorer

To install these updates, visit the following Microsoft Web site: Note If you are running Windows Vista, you only have to install the update that is described in security bulletin MS07-027.

To work around this problem, uninstall the Yahoo! toolbar. Then, install the most recent version of the Yahoo! toolbar. To obtain the most recent version, visit the following Yahoo! Web site:

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

For more information, click the following article numbers to view the articles in the Microsoft Knowledge Base: 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.