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Silverlight Applications Crash in Firefox When Recording or Running Scripts

Article ID: 811  |  Last updated: 20 Mar, 2015


When recording or running QA Wizard Pro scripts, Microsoft Silverlight applications running in Mozilla Firefox 3.6.4 or later crash when a message box is displayed.


Using the MessageBox.Show method to display Silverlight message boxes causes Firefox to become unresponsive or plugins running in Firefox to crash. This is a known Firefox issue.


Record and run scripts that test Silverlight message boxes in a supported version of Internet Explorer.

You can also replace the MessageBox.Show method with a custom ChildWindow class. Refer to the Silverlight help for more information.

Article ID: 811  |   Last updated: 20 Mar, 2015
Firefox Silverlight crash message box

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