When I start a System Coupling analysis, I get error messages similar to the following (but maybe with a different port number): CFX: — ERROR #001100279 has occurred in subroutine ErrAction. Message: ANSYS CFX is unable to connect to the system coupling service on 0.0.0.0 through port 49755. Please ensure that the host name and the port number are correct. Mechanical: — *** FATAL *** CP = 1.388 TIME= 13:45:41 MAPDL is unable to connect to the system coupling service on 0.0.0.0 through port 49755. Please check ANSYS execution options -schost and -scport for a System Coupling analysis and ensure that the host name and the port number are correct. I checked that the port is not blocked by my firewall. What could be the reason for the failure?
June 5, 2023 at 7:06 amFAQParticipant
The System Coupling Service is started on the machine on which the Workbench project is updated and the communication port is dynamically assigned. The host and port information is then stored in the System Coupling Server File (scServer.scs), which is described in more detail in the System Coupling User’s Guide -> Understanding the System Coupling Service -> Files Generated by Coupling Service -> System Coupling Server File. The hostname should normally look like mymachinename.domain.com, but the error messages show that on your machine the hostname is incorrectly set to 0.0.0.0 which leads to the failure. Certain entries in the hosts file of your machine can cause this behavior. Please check and clean up your hosts file and retry. The hosts file can be found in the following location: Windows: %SystemRoot%System32driversetchosts Linux: /etc/hosts
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