1. Be sure you can ping the supervisor, using the operating system's ping command-line utility.  If you cannot, there is a networking issue outside of Qube.
    2. Check firewall settings. We prefer that machine-level firewalls are disabled.  If you cannot turn off the firewall, open ports 50001-5002, 50010-50012
    3. Be sure qb_supervisor is set to your supervisor's hostname or IP address in the local machine's qb.conf.
    4. Be sure qb_domain is consistent across your facility.  The default and recommended value is "qube" (note: This is the qube domain.  It not related to any other domains in your facility)

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