The application that hosts a WebBrowser control crashes when you use a custom MIME filter on a computer that has Internet Explorer installed

Consider the following scenario on a computer that has Windows Internet Explorer 6, Windows Internet Explorer 7, or Windows Internet Explorer 8 installed:

• You run an application that hosts a WebBrowser control.
  
  Note The WebBrowser control is implemented by using the IWebBrowser2 interface.
• You use a custom MIME filter.
• The MIME filter returns the NET_E_USE_DEFAULT_PROTOCOLHANDLER HRESULT in the IInternetProtocolRoot::Start implementation of the application.

In this scenario, the application crashes when the urlmon.dll::OnInetInternalCallback function is called.

Security update information

To resolve this problem, install the most recent cumulative security update for Windows Internet Explorer. To do this, visit the following Microsoft Web site: For more technical information about the most recent cumulative security update for Windows Internet Explorer, visit the following Microsoft Web site: Note This update was first included in security update 978207 (MS10-002). For more information, click the following article number to view the article in the Microsoft Knowledge Base:

For more information about the IWebBrowser2 interface, visit the following Microsoft Developer Network (MSDN) Web site:For more information about the IInternetProtocolRoot interface, visit the following MSDN Web site:For more information about how to handle MIME types in Internet Explorer, visit the following MSDN Web site: