Articles/HTTP

HTTP 423 Locked — What It Means

What HTTP status code 423 Locked means, when servers return it, and how to handle it correctly.

Published September 25, 2026

HTTP 423 Locked — The target resource is locked and cannot currently be modified.

Key points

  • Part of the WebDAV extension to HTTP
  • Indicates the resource is locked, typically by another client or process
  • Rarely seen outside WebDAV-based file management systems
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