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Editorial Team
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Asked: 2026-06-13T16:47:28+00:00

So for some reason our logger has stopped logging and I am at a

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So for some reason our logger has stopped logging and I am at a complete loss as to why.
What I’m using in my project is the following:

The log4net configuration:

<?xml version="1.0" encoding="utf-8"?>
<log4net>
  <root>
    <level value="DEBUG" />
    <appender-ref ref="UdpAppender" />
    <appender-ref ref="RollingFile" />
  </root>

  <appender name="UdpAppender" type="log4net.Appender.UdpAppender">
    <remoteAddress value="127.0.0.1" />
    <remotePort value="8180" />
    <layout type="log4net.Layout.XmlLayoutSchemaLog4j">
      <locationInfo value="true" />
    </layout>
  </appender>

  <appender name="RollingFile" type="log4net.Appender.RollingFileAppender">
    <file value="Logs/DA.RA.log"/>
    <lockingModel type="log4net.Appender.FileAppender+MinimalLock"/>
    <appendToFile value="true"/>
    <maxSizeRollBackups value="10"/>
    <maximumFileSize value="10MB"/>
    <rollingStyle value="Size"/>
    <staticLogFileName value="true"/>
    <layout type="log4net.Layout.PatternLayout">
      <conversionPattern value="%-5level %date %logger - %message%newline"/>
    </layout>
  </appender>
</log4net>

In my web.config I have the following line:

<section name="log4net" 
         type="log4net.Config.Log4NetConfigurationSectionHandler,log4net, Version=1.2.11.0, Culture=neutral, PublicKeyToken=a3d255455d3dcb36" 
         requirePermission="false"/>

In my global.asax I have the following line in the application_start method:

string filename = Server.MapPath( @"~\XML\log4net.xml" );
log4net.Config.XmlConfigurator.ConfigureAndWatch( new System.IO.FileInfo( filename ) );

and when I call the logger in any of my pages I use:

private static readonly ILog logger = LogManager.GetLogger(typeof(ReportParameters));

I have tried many different things I found online. These include:

adding the following line to the assembly in my project

[assembly: log4net.Config.XmlConfigurator(Watch=true)]

I tried:

[assembly: log4net.Config.XmlConfigurator()]

I’ve upgraded the version of my log4net.dll from 1.2.10.0 to 1.2.11.0.

I tried adding the log4net appenders to the web.config file instead of in it’s own file, and I still get nothing out of the logging.

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1 Answer

  1. Editorial Team

    Try opening internal debugging of log4net and check or share the result:

    Note: I made a sample app and used your same log4net.xml file and ConfigureAndWatch statement and it worked without a problem. I think you are having a filename path resolution problem or permission to write problem. Create log folder If you didn’t.

    You need to add to web.config

    <appSettings>
  <add key="log4net.Internal.Debug" value="true" />
 </appSettings>

 <system.diagnostics>
  <trace autoflush="true">
   <listeners>
    <add
     name="textWriterTraceListener"
     type="System.Diagnostics.TextWriterTraceListener"
     initializeData="c:\\inetpub\\wwwroot\\log4net.txt" />
   </listeners>
  </trace>
 </system.diagnostics>
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