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Unable to get the window handle for the XXX control. Windowless ActiveX controls are not supported. RRS feed

  • Question

  • Hi,

    We have created a user control which inturn inherited form webbrowser, but on windows 7 machines and on citrix machine, it intermittently throws Big Red x exception, and when we check in side the log files, the message is

    Unable to get the window handle for the 'McKHtmlLabel' control. Windowless ActiveX controls are not supported.

    where 'McKHtmlLabel' control is user control which inherits from webbrowser.

    It works fine on windows xp machine, but not windows 7 and windows server 2008.

    Please give some solution for it, as it has become big issue for us right now.

    Monday, June 4, 2012 9:14 PM

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