Diagnosing and resolving persistent 502 errors on Worldline Gateways. Safe handling, preventative measures, and troubleshooting steps for retail environments.
This helps understand the troubleshooting progression and avoid redundant steps.
This clarifies the network connection type and related troubleshooting steps.
This helps determine if the issue is isolated to the gateway or a broader network problem.
502 Bad Gateway errors typically indicate a server-side problem where the gateway receives an invalid response from an upstream server. This can involve network timeouts, DNS resolution failures, or issues with the gateway's internal routing or session management. Transient errors might suggest intermittent network congestion or temporary server unavailability. Signal attenuation in network cabling can lead to packet loss.
Do NOT attempt to open the Worldline Gateway casing. Doing so may trigger anti-tamper mechanisms and render the device unusable. Ensure the device is disconnected from power during inspection of cable connections. Be mindful of electrostatic discharge (ESD) in dry environments; ground yourself before touching the device or cables. Clean the touchscreen with a manufacturer-approved cleaner only.
If the gateway uses a static IP address, try switching it to DHCP to see if the issue resolves itself, ruling out IP conflicts. Alternatively, setting the DNS server to a public DNS (e.g., 8.8.8.8) can sometimes resolve DNS-related 502 errors.