httphandler 404

Question

User-1716951449 posted

developed a httphandler on .net 4.5, workstation win10 pro

tested everything good

deployed to server, i believe the server iis is 8.5

getting error 404

they both running apppool with integrated mode

so the config is within <system.webServer>

i can c the httphandler mapping in the server iis

tried googled, putting in whatever additional attributes suggested, none working

anyone has good way to troubleshoot/fix?

Answer 1

User-1716951449 posted

somehow at later time, it's working.

dunno what happened, maybe need to restart the web instance

as the last time when i want to troubleshoot, the order/sequence of how handlers are being executed came into mind, suspecting maybe the request is served by other handler b4 reaching my

Answer 2

User1771544211 posted

Hi kelmen,

as the last time when i want to troubleshoot, the order/sequence of how handlers are being executed came into mind, suspecting maybe the request is served by other handler b4 reaching my

It seems that the request is handled by another handler, to check this issue, you can first enable IIS detailed error page to check if the detailed error information contains the handler which handles the request.

If the IIS detailed error page not showing the handler information, you can enable the failed request tracing to check the detailed request process information.

To enable the IIS detailed error page and failed request tracing, please take the following links as reference.

https://blogs.msdn.microsoft.com/rakkimk/2007/05/25/iis7-how-to-enable-the-detailed-error-messages-for-the-website-while-browsed-from-for-the-client-browsers/

http://www.iis.net/learn/troubleshoot/using-failed-request-tracing/troubleshooting-failed-requests-using-tracing-in-iis

Best Regards,

Jean