View Complete Thread
  • Re: IIS 8.5 Windows Authentication

    Feb 11, 2019 03:20 PM|Madness80|LINK

    You need to tell IIS to display the details of the error. In the web.config file add the bolded lines to the appropriate sections.

     <system.web>
            <customErrors mode="Off" />
      </system.web>
      <system.webServer>
            <httpErrors errorMode="Detailed" />
      </system.webServer>

    If that doesn't work, then you will need to enable failed request tracing for 500 errors. (You might want to do this anyway!) See https://docs.microsoft.com/en-us/iis/troubleshoot/using-failed-request-tracing/troubleshooting-failed-requests-using-tracing-in-iis-85

    In that example they create an error situation for 404.2  to test with. You won't need to do that. Start at the "Enable Failed-Request Tracing" section and set it up for a 500 status code.