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505 HTTP Version Not Supported

About

The HTTP 505 HTTP Version Not Supported server error response status code indicates that the HTTP version used in the request is not supported by the server ; it’s common to see this error when a request line is improperly formed such as GET /path to resource HTTP/1.1 or with \n terminating the request line instead of \r\n1.

Example

For example, intermediaries such as load balancers may not handle request lines of a forwarded request as illustrated in the example below:

505 HTTP Version Not Supported

Anki

References


  1. MDN. “505 HTTP Version Not Supported”. Available at: https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/505 . (Accessed: [2025-05-22 Thu 23:21]). ↩︎

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