.net - Cannot see detailed errors of Internal Server 500 errors -

i running microsoft asp.net web api 2.1 application in iis7.5 , getting generic:

500 - internal server error.

there problem resource looking for, , cannot displayed.

i have tried following more detail on actual error far, face palming:

• set globalconfiguration.configuration.includeerrordetailpolicy = includeerrordetailpolicy.always;
• added <system.webserver> <httperrors existingresponse="passthrough"/> </system.webserver>
• checked windows event log unhandled exceptions, none

• added exceptionlogger, nothing appears in log file:

  public class log4netexceptionlogger : exceptionlogger {    private readonly ilog _log = logmanager.getlogger(typeof(log4netexceptionlogger));     public override void log(exceptionloggercontext context)    {       _log.error("an unhandled exception occurred.", context.exception);       base.log(context);    } } 

• added

  <configuration> <system.webserver> <httperrors errormode="detailed" /> <asp scripterrorsenttobrowser="true"/> </system.webserver> <system.web> <customerrors mode="off"/> <compilation debug="true"/> </system.web> </configuration>

• browsed locally , "this page can't displayed" in ie, binding not localhost

i see 500 responses in iis logs, no detail error.

create binding localhost website , navigate http://localhost within web browser on server.

since request coming localhost, iis show error details in browser.

not great solution, fastest i've found far.