> For the complete documentation index, see [llms.txt](https://docs.devolutions.net/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.devolutions.net/server/knowledge-base/troubleshooting-articles/failed-request-tracing-with-iis/logs.md).

# Logs

Describes where failed request tracing log files are stored in IIS and how to open the XML trace files to diagnose Devolutions Server errors.

With failed request tracing enabled, the log files are created and populated in the directory set up in [Configure failed request tracing](/server/knowledge-base/troubleshooting-articles/failed-request-tracing-with-iis/configuration.md). By default, the path is **%SystemDrive%\inetpub\logs\FailedReqLogFiles**. There, a folder typically named **W3SVC1** is created when the first case happens.

### W3SVC1 folder content

* XML files (**fr######.xml**): Open an XML file to view the log triggered by the tracing rule.
* XSL file (**freb.xsl**): For the display style, in an XML viewer like Internet Explorer.


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