HTTP 424 Failed Dependency

What does HTTP 424 mean?

WebDAV: the request failed because a request it depends on failed. Appears inside a 207 Multi-Status response when one operation in a batch fails and the others can’t proceed.

4xx Client error: The request has a problem the client can fix: wrong URL, missing credentials, bad data or too many requests.

How to fix 424 Failed Dependency

• Look at the other statuses in the batch to find the original failure.

424 and SEO

Not relevant for normal web pages.

Example response

HTTP/1.1 424 Failed Dependency

How to return a 424 response

Node.js (Express)

res.status(424).json({ error: 'Failed Dependency' });

PHP

http_response_code(424);

Python (Flask)

return {'error': 'Failed Dependency'}, 424

Go (net/http)

w.WriteHeader(424)

nginx

return 424;

Related status codes

• 207 Multi-Status — WebDAV: the body contains separate status codes for several resources.
• 423 Locked — WebDAV: the resource is locked and cannot be changed right now.
• 422 Unprocessable Content — The request is well-formed but contains semantic errors.

Check which status code a URL returns with the HTTP header checker.