ResellerClub Connection Errors

Problem

You see one of the following connection errors while using ResellerClub for domain registrations.

HTTP Error: Couldn't open socket connection to server.
Domain Registration Error - Unable to connect to Registry.

Cause

This error indicates that your firewall is blocking the connection or there is a problem with the ResellerClub server.

Solution

This troubleshooting information only applies to self-hosted WHMCS installations.

Check to ensure that your server’s firewall is not blocking any required ports.

troubleshooting troubleshooting-article domain-registration resellerclub

Last modified: 2025 October 17