A webpage or an ActiveX control may stop receiving the focus intermittently in Internet Explorer 9 and later versions
Note This issue can affect any user interface element on the page that can receive the focus.
- Avoid making long-running blocking calls or performing any synchronous work on a UI thread that can potentially interfere with the thread's message pump.
- Create the following registry subkey value to disable the Hang Resistance feature:By default, the Hang Resistance feature is enabled in Internet Explorer 9. Setting the HangRecovery value to 0 disables this feature; setting the value to 1 enables the feature.HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main
- Avoid calling the AttachThreadInput API or other APIs that can potentially result in changing the owner for the Tab window, because those APIs affect the Tab Thread's input queue. An example of an API that can change the Tab Thread's input queue is SetWindowLong.
Article ID: 2633864 - Last Review: 09/21/2016 05:54:00 - Revision: 5.0
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