What is HTTP 421 Misdirected Request?
The 421 Misdirected Request response indicates that the request reached a server that is unable to respond correctly.
Common Causes
- HTTP/2 connection reuse issues
- Incorrect virtual host configuration
- Proxy routing problems
DevOps Considerations
This status code is commonly investigated when working with load balancers, proxies, and HTTP/2.
Summary
421 Misdirected Request means the request reached the wrong server.