HTTP 421 Misdirected Request — What It Means & How to Fix It

The HTTP 421 Misdirected Request status code indicates the request was directed to a server that is unable to produce a response for the given URI. This guide covers everything you need to know about this topic, including common causes, step-by-step solutions, and answers to frequently asked questions.

Here are the key things to understand: This can occur when an HTTP/2 connection is reused for a request to a different origin.. The server is indicating it is not the correct server for this request.. The client should retry the request on a different connection.. Common with misconfigured TLS certificates or virtual hosts.. Understanding these fundamentals will help you diagnose and resolve this issue more effectively.

The most common reasons this occurs include: HTTP/2 connection coalescing directed the request to the wrong server.. The TLS certificate does not cover the requested domain.. Virtual host misconfiguration on the server.. CDN or load balancer routing error.. Identifying the root cause is the first step toward finding the right solution.

To resolve this, follow these recommended steps: Retry the request on a new connection without reusing the existing one.. Verify the server TLS certificate covers the requested domain.. Check virtual host and server configuration.. Review CDN or load balancer routing rules.. If these steps do not resolve the issue, consider consulting additional resources or a qualified professional.

This article is part of our HTTP Status Codes collection on Error Codes Wiki. We provide comprehensive, up-to-date information to help you find solutions quickly.