Is Error 1003 always a server-side issue, or can client-side

While Error 1003 frequently points to server-side or intermediary (e.g., Cloudflare) blocking, client-side configurations can absolutely contribute to or cause this error when attempting a direct IP connection. **Client-Side Contributions:** * **Local Firewall/Antivirus:** The client's operating system firewall or third-party security software might block outgoing connections to the specific IP or port. * **Proxy Server Settings:** An outbound proxy server on the client might be misconfigured, offline, or itself blocking the direct IP connection. * **VPN Usage:** Connecting via a VPN can change your egress IP, potentially landing it in a geo-blocked region or an IP range blacklisted by the server or its security services. * **Network Configuration:** Incorrect client network settings (e.g., subnet mask, gateway) could prevent proper routing to the target IP. **Server-Side/Intermediary Causes (More Common):** Cloudflare's direct IP blocking, server firewalls, and application-level security rules are more common culprits. Therefore, thorough troubleshooting requires checking both client and server sides.