AE server process fails to start and a U00011893 Work process 'UC4T#WP004' will be shut down error appears in the log

Document ID : KB000084609
Last Modified Date : 22/06/2018
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Sometimes it can happen that an AE Server Process does not start. In the logs, the following error message is displayed.
U00011893 Work process 'UC4T#W04' will be shut down because its netArea differs from the netArea of the primary server
A second restart a few moments later works again.
The netArea of a new work process is not up to date in the socket list when the Start message of the new work process comes to the primary work process, causing the work process to shut down.
Update to a fix version listed below or a newer version if available.
  • Automation Engine 12.2.0
  • Automation Engine 12.1.1
  • Automation Engine 12.0.5
  • Automation Engine 11.2.7
Additional Information:
Restart the server process.