Applications that host Internet Explorer 11 WebBrowser control may freeze when they use sessionStorage

Symptoms
This issue occurs when applications that use the sessionStorage content from multiple Internet Explorer 11 WebBrowser control instances run on the same or single thread. When this issue occurs, the CPU and memory usage also become high.
Resolution
To resolve this issue, install the most recent cumulative security update for Internet Explorer. To do this, go to Microsoft Update. Additionally, see the technical information about the most recent cumulative security update for Internet Explorer.

Note This update was first included in the Description of the security update for Internet Explorer: July 14, 2015 (MS15-065).
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
References
See the terminology that Microsoft uses to describe software updates.
Properties

Article ID: 3071700 - Last Review: 07/14/2015 17:12:00 - Revision: 1.0

Internet Explorer 11

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