1. Ensure that the <$SPECROOT>.hostrc file exists and has not been renamed to anything else or that a file extension has not been added.
2. Ensure that all the required hosts have been added as documented. By default, the .hostrc file is initially installed with the local hostname, which restricts all remote access. Adding an individual hostname enables connections to and from that server. Enable unrestricted access to and from all remote servers by adding a "+" symbol. An incorrectly spelled hostname will cause problems, so a good test is to see if removing individual host names and just adding a single "+" to the file, resolves this error. For more information, see below: