“Connection refused” would indicate that either the server was (temporarily) unavailable, or some intermediate network device — router, proxy, firewall, etc. — is refusing the connection.
Has the issue persisted or is it now resolved? If it’s resolved, it was a temporary Salesforce server outage which, while rare, does occur. If it’s still present, does it happen with other orgs or just this one?
If you’d like get more details, you can add the following to Help | Diagnostic Tools | Debug Log Settings:
com.illuminatedcloud.intellij.client.ForceComApiClient com.illuminatedcloud.intellij.client.ForceComApiClient!traceThen restart the IDE (required to reinitialize the SOAP client), and all SOAP and REST API calls will be logged in detail. Note that this can include private information such as passwords and security tokens, so if you share your idea.log file for review, please redact any private information before doing so. Feel free to send a log via email and I’ll be happy to take a look.
Once that logging is no longer needed, remove those entries and once again restart the IDE to ensure that SOAP and REST API calls are no longer being emitted into the log.
Regards,
Scott Wells