# Response Codes

If you encounter a response code not listed here, please contact us via live chat for assistance.

<table><thead><tr><th width="281">Response</th><th>Description</th></tr></thead><tbody><tr><td><strong>400 – Bad Request</strong></td><td>The request could not be parsed or is incorrectly formatted.</td></tr><tr><td><strong>400 – Bad Request</strong></td><td>Unsupported SOCKS version. Only <strong>SOCKS5</strong> is supported.</td></tr><tr><td><strong>400 – Bad Request</strong></td><td>Unsupported or invalid parameters were used.</td></tr><tr><td><strong>403 – Access Denied</strong></td><td>Access to the target website is restricted by the target itself.</td></tr><tr><td><strong>407 – Access Denied</strong></td><td>Proxy authentication failed. Check credentials or whitelist settings.</td></tr><tr><td><strong>500 – Internal Server Error</strong></td><td>A temporary internal error occurred. Retry the request.</td></tr><tr><td><strong>502 – Bad Gateway</strong></td><td>The residential peer failed to return a valid response.</td></tr><tr><td><strong>502 – Bad Gateway</strong></td><td>Session failed or exit node became unavailable. Start a new session.</td></tr><tr><td><strong>502 – Bad Gateway</strong></td><td>The client disconnected during the request. Retry the request.</td></tr><tr><td><strong>504 – Gateway Timeout</strong></td><td>The target website did not respond in time.</td></tr><tr><td><strong>522 – Connection Timed Out</strong></td><td>The connection to the target website timed out.</td></tr></tbody></table>


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