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https://issues.apache.org/jira/browse/LOG4NET-178?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12648323#action_12648323
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Ilpo Juvander commented on LOG4NET-178:
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We have also similar situation. We're using rollingfileappender.

What has helped on some cases is to call on global.asax 
Xmlconfigurator.ConfigureAndWatch -method on Init(), but this trick does not 
work 100% of the time. It just stops logging.

Even restarting IIS does not help. Sometimes logging resumes after renaming the 
logfile, sometimes not. Same thing happens when adding the processid into it.

Appender in setup like this:

    <appender name="RollingLogFileAppender" 
type="log4net.Appender.RollingFileAppender">
      <file value="Webservice.service.txt" />
      <lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
      <appendToFile value="true" />
      <rollingStyle value="Size" />
      <maxSizeRollBackups value="10" />
      <maximumFileSize value="1000KB" />
      <staticLogFileName value="false" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date %-5level %logger (%file:%line) - 
%message%newline" />
      </layout>
    </appender>

Nothing really helpfull in the log4net debug after 

log4net: Hierarchy: Shutdown called on Hierarchy [log4net-default-repository] 

Xmlconfigurator entires are never shown and logging stopped.

On some systems this does not happen at all, on some places it happens all the 
time. Took a while before I got it in our test environment, but now it happens 
in there all the time as well...

> Log4Net stops logging after appdomain recycle of aps.net2.0 application
> -----------------------------------------------------------------------
>
>                 Key: LOG4NET-178
>                 URL: https://issues.apache.org/jira/browse/LOG4NET-178
>             Project: Log4net
>          Issue Type: Bug
>          Components: Appenders
>    Affects Versions: 1.2.10
>         Environment: Windows server 2003
>            Reporter: Richard Nijkamp
>
> Dear sir/madam,
>  We are using Log4Net 1.2.10. We encounter the problem that Log4net doesn't 
> continue logging after an event that triggers an appdomain recycle/restart.
>  In the global.asax we start the logging with:
>  private static readonly ILog log = 
> LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
> Logging works flawless when the application is started for the first time. 
> After sometime it might occur that the appdomain gets recycled due to 
> inactivity of the web application. We use the following code in 
> Application_end():
> log.Info("*** Application end ***");
> log4net.LogManager.Shutdown();
> After this function the application gets restarted and the 
> Application_start() method executes and writes new lines to the log. The 
> problem is that the log4net doesn't write the new lines after the restart. 
> Could you explain why log4net might stop working after an appdomain restart 
> of an asp.net2.0 web application? If I want log4net to work properly again I 
> need to restart IIS manually.
>  Looking forward to your reply.
> Best regards,
> Richard Nijkamp

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