As of Tridion Sites 9.6 and later product versions, the CM logging mechanism has changed. Steps to enable Publisher debug are:
In %TRIDION_HOME%/bin/Nlog.config file, add these sections
1. In targets element
<target xsi:type="File"
name="CMlog"
archiveAboveSize="1000000"
fileName="${environment:TRIDION_HOME}/log/CMLog_${shortdate}.log"
bufferSize="4096"
keepFileOpen="true"
autoFlush="false"
openFileFlushTimeout="10"
layout="${longdate}|${level:uppercase=true}|${processid}|${event-properties:item=component}|${message} ${exception:format=tostring:innerFormat=tostring:maxInnerExceptionLevel=10}"/>
2. In rules element
<logger name="*" minlevel="Debug" writeTo="CMLog" />
3. Restart Publisher.
4. Log file will be written to the %TRIDION_HOME%/log folder, with file format CMLog_2024-11-21.log.
Update filepaths and filename as appropriate.
Output will be something like
----------------- HEADERS -----------------
Accept: application/xml; version=1.0
x-sfnt-sha256: null
x-sfnt-date: 1732224136736
Authorization: SCWS 4477269:0YC0memPT66sKZm3ygV5Mkv2lbwevzv9RUQY1kuMa4M=
********************************************
2024-11-21 13:22:16.9742|WARN|2280||Empty repository is used.
Process: TcmPublisher. Entry/Calling assembly name: TcmPublisher.
2024-11-21 13:22:17.0901|DEBUG|2280||Starting 4 worker threads for PublishQueue.
2024-11-21 13:22:17.1370|DEBUG|2280||Starting 4 worker threads for DeployQueue.
2024-11-21 13:22:17.1592|DEBUG|2280||Starting Deployment feedback handler thread.
2024-11-21 13:22:17.1748|INFO|2280||Tridion Sites Content Manager Publisher service started
2024-11-21 13:22:17.1905|DEBUG|2280||Deployment feedback handler thread started.
2024-11-21 13:22:17.2752|DEBUG|2280||Received 0 transport feedbacks.
2024-11-21 13:22:17.6066|DEBUG|2280||Listening for messages on PublishQueue.
2024-11-21 13:22:17.6066|DEBUG|2280||Listening for messages on DeployQueue.
2024-11-21 13:22:17.7603|INFO|10292|Tridion.Licensing|Logon feature TCMCores for user W19R205D:Core4 was unsuccessful
2024-11-21 13:22:18.5077|DEBUG|2280||Received 0 transport feedbacks