我觉得legacyUnhandledExceptionPolicy选项你的答案。

I think "legacyUnhandledExceptionPolicy" option is your answer.

导致ASP.NET未处理的异常崩溃的.NET 2.0 ; http://blogs.msdn.com/b/tom/archive/2007/12/04/unhandled-exceptions-causing-asp-net-to-crash-in-net-2-0.aspx

Unhandled exceptions causing ASP.NET to crash in .NET 2.0 ; http://blogs.msdn.com/b/tom/archive/2007/12/04/unhandled-exceptions-causing-asp-net-to-crash-in-net-2-0.aspx