C# 未注册IIS 8异常筛选器

我有一个带有错误过滤器的MVC4应用程序来捕获所有未处理的异常

public class GlobalErrorHandler : FilterAttribute, IExceptionFilter
    {
        private readonly log4net.ILog logger = log4net.LogManager.GetLogger(typeof(GlobalErrorHandler));

        public void OnException(ExceptionContext filterContext)
        {
            if (filterContext.ExceptionHandled || !filterContext.HttpContext.IsCustomErrorEnabled)
                return;

            var statusCode = (int)HttpStatusCode.InternalServerError;
            if (filterContext.Exception is HttpException)
            {
                statusCode = (filterContext.Exception as HttpException).GetHttpCode();
            }
            else if (filterContext.Exception is UnauthorizedAccessException)
            {
                //to prevent login prompt in IIS
                // which will appear when returning 401.
                statusCode = (int)HttpStatusCode.Forbidden;
            }

            var controllerName = (string)filterContext.RouteData.Values["controller"];
            var actionName = (string)filterContext.RouteData.Values["action"];
            var model = new HandleErrorInfo(filterContext.Exception, controllerName, actionName);
            var result = new ViewResult
                                    {
                                        ViewName = "~/Views/Shared/Error.cshtml",
                                        ViewData = new ViewDataDictionary<HandleErrorInfo>(model),
                                    };
            filterContext.Result = result;


            logger.Error("Error Controller: " + controllerName + " Action: "+ actionName + "Exception: " + filterContext.Exception.StackTrace);
            // Prepare the response code.
            filterContext.ExceptionHandled = true;
            filterContext.HttpContext.Response.Clear();
            filterContext.HttpContext.Response.StatusCode = statusCode;
            filterContext.HttpContext.Response.TrySkipIisCustomErrors = true;
        }
    }

在VisualStudion和IIS 7.5（Win 7）上，它按预期工作（显示自定义错误页面），但在IIS 8.5（Win Server 2012 R2）上，当引发一些未处理的异常时，会显示内部服务器错误页面。如何在IIS 8上启用错误处理程序

编辑：可能的副本。我明天试试。

添加

<system.webServer>
    <httpErrors errorMode="Detailed" />
</system.webServer>

正如这里所说的，解决了这个问题

<system.webServer>
    <httpErrors errorMode="Detailed" />
</system.webServer>