When the Message Broker starts, it reads the STMessageBroker68.ini configuration file. On Windows systems, this file is typically located in the C:\Program Files\Micro Focus\Message Broker folder. Options in this file tell the Message Broker what TCP/IP port (end point) to accept connections on, and which other Message Brokers (if any) to establish communication with to form a Message Broker cloud. See Configuring a Message Broker Cloud for details on the contents of the STMessageBroker68.ini file.