asp.net mvc - MVC5 Cannot return custom 404 error with JsonResult -


i cannot return custom json result below when publish mvc5+angular2 project iis. return default iis 404 error html.

response.statuscode = 404; return json(myerrorobject, jsonrequestbehavior.allowget);

everything works fine whil developing project using iis express.

thanks.

if want return json custom 404 or http message, need set config below;

<system.webserver>   <httperrors existingresponse="passthrough"/> </system.webserver>

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