>Hello Team, I am obviously doing something wrong ... Why do I get the default IIS error pages given the following code:
>
>

Context.Response.Clear();
>Context.Response.StatusCode = 403;
>Context.Response.End();
>
>and a web.config that has:
>
><customErrors mode="On" defaultRedirect="defaultError.htm">
>   <error statusCode="404" redirect="~/NotFound.aspx" />
>   <error statusCode="403" redirect="~/NoAccess.aspx" />
></customErrors>

Have you considered using the Throw New HttpException approach such as:

        Throw New HttpException(404, "File Not Founded")