How to Debug SharePoint 2013 Using Server-Side Request Tracing

In some cases, problems can occur before requests reach SharePoint. To investigate such problems, you may need to capture and analyze network traffic or IIS requests. The following tools  can used for various network tracing tasks:
  • Microsoft Message Analyzer
  • Microsoft Message Analyzer is the successor to
  • Microsoft Network Monitor (Netmon.exe).
  • Message Analyzer is a downloadable tool that you
 For example, you can:
  • Analyze the requests received by a WFE server.
  • Analyze the network traffic between two servers, such as a WFE server and a gateway server. Analyzing network traffic in this way can help you to resolve a range of problems. For example, network tracing can highlight issues with:
    • Network connectivity
    • Firewalls blocking specific requests
    • Domain name system (DNS) resolution
    • Authentication
 IIS Failed Request Tracing
 
Even when a network request makes it to a WFE server, there are still a wide range of conditions that could prevent IIS from being able to parse the request and pass it to SharePoint. These conditions could include incorrectly configured site bindings, configuration errors in the Web.config file, missing IIS modules, authentication failures due to loopback checking and so on. Failed request tracing in IIS enables you to capture detailed information about requests as they move through the IIS pipeline. IIS 7, IIS 7.5 and IIS 8.0 use a rule-based approach to failed request tracing. At a high level, you must complete the following tasks:
  1. In IIS Manager, enable failed request tracing for the IIS website that hosts your SharePoint web application.
  2. Configure failed request tracing rules to define the error conditions you want to log. These can include specific HTTP status codes, requests that take longer than a specified time and minimum event severity levels.
  3. Specify the trace provider and the categories that you want to log. Depending on where in the request pipeline you are experiencing areas, you might include the ASPNET, ISAPI Extension, or WWW Server trace providers.

After you configure failed request tracing, detailed information about any requests that meet the criteria specified by your failed request tracing rules is written to a log file. By default, these files are stored in the %systemdrive%\inetpub\logs\FailedReqLogFiles\W3SVC1 folder.

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