417
Expectation Failed
Client ErrorThe expectation given in the Expect request header could not be met by the server.
Category: 4xx Client Errors Standard: RFC 9110 First Appeared: HTTP/1.1
What is 417 Expectation Failed?
HTTP 417 Expectation Failed is a 4xx status code. The expectation given in the Expect request header could not be met by the server.
Client Request
Server
Request Rejected
Common Causes
The request was malformed or invalid
The client lacks permission or valid authentication
The requested resource or route does not exist
A precondition or content requirement was not met
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