Location of the log files

The log files are text files written to the log directory of the Communications Manager installation. Each Communications Manager Code instance creates a structure of log files matching the installed components.

Example If Communications Manager Core version 2025.3 is installed on a server named TestServer, log files for Communications Manager Core instance 3 with two Communications Manager Document Processors would reside with the following structure at <deploy root>\CommunicationsManager\Work\2025.3\Instance_03\core\Log.

TestServer
  KCM57-I03-CoreDP[core_03_2025.3]1
  KCM57-I03-CoreDP[core_03_2025.3]2
  KCM57-I03-CoreServer[core_03_2025.3]
  KCM57-I03-CoreWatcher[core_03_2025.3]

These folders contain the logs for their respective components. By default, the logs are rotated. The most recent logs reside in the unnumbered file with the .log extension.

You can view logs in a text editor.

Ensure that the account that runs the Communications Manager Core Processes has sufficient authorization to write to the folder that the log files are written to. If Communications Manager Core does not have sufficient authorization in the log folder, it is not able to start any of its Services. If no log files are created by Communications Manager Core, check the Windows event log for error messages.