111 Revalidation Failed

HTTP Warning code 111 Revalidation Failed is used in combination with the Warning header and included with HTTP responses to indicate the response is stale and a revalidation attempt failed because the server was unreachable.

Example

Warning: 111 www.example.re "Revalidation Failed"

See also

• RFC 7234: HTTP Caching (obsoleted)
• RFC 9111: HTTP Caching
• Warning
• Caching
• HTTP status codes