Trace failed requests on IIS

Owned by Genhan Chen
Last updated: Jan 22, 2018
1 min read

To diagnose the cause of failed requests (see the following example), we need to know where and how to trace the issue.

Step-by-step guide


The log files are at C:\inetpub\logs\FailedReqLogFiles

The XML log file should be open with IE, and "about:internet" should be added into the Trusted sites:

https://docs.microsoft.com/en-us/iis/troubleshoot/using-failed-request-tracing/troubleshooting-failed-requests-using-tracing-in-iis