On my IIS log I found errors that occur randomly when a client calls my WCF service.
The error log is this:
#Software: Microsoft Internet Information Services 8.5 #Version: 1.0 #Date: 2018-12-13 10:21:27 #Fields: date time s-ip cs-method cs-uri-stem cs-uri-query s-port cs-username c-ip cs(User-Agent) cs(Referer) sc-status sc-substatus sc-win32-status time-taken 2018-12-13 10:21:27 [MYSERVERIP] POST /MyService/Service.svc - 443 - [CLIENTIP] IBM+WebServices/1.0 - 500 0 64 328
It seems that in some situations the call to the service returns error 500.
From my tests I was not able to reproduce the error, the only thing I understood is that the service code is not executed. The error is raised before.
I wanted to know if there's a way on IIS to get a more detailed error log and figure out what it might depend on.
I tried to set the "FailedReqLogFiles" but nothing is tracked.