The server refuses to brew coffee — an April Fools' joke defined in RFC 2324.
Quick facts
When does it occur
The server refuses to brew coffee — an April Fools' joke defined in RFC 2324.
It belongs to the 4xx Client Error class of responses, defined in RFC2324#2.3.1.
Browse all codes in this class: 4xx Client Error
Common causes
Frequently asked questions
418 belongs to the 4xx Client Error class and is generally not cached for long; behavior is controlled by Cache-Control.
4xx Client Error: The server refuses to brew coffee — an April Fools' joke defined in RFC 2324.
Sources & standards
Updated 2026-08-18
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