All HTTP status codes

HTTP 423 Locked

Client Error

The WebDAV resource is locked by another client and the request would violate the lock.

Defined in RFC 4918 (WebDAV)

Common causes

  • Concurrent WebDAV editing with exclusive locks

How to fix it

  1. Wait for or break the lock (LOCK/UNLOCK semantics)

  2. Send the correct lock token in the If header

Related status codes

409 Conflict

The request conflicts with the resource's current state — classic cases are duplicate creation and stale optimistic-locking versions.

424 Failed Dependency

The request failed because an earlier request it depended on (in the same WebDAV operation) failed.

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