What does an HTTP response code in the 4XX range typically indicate?

An HTTP response code in the 4XX range typically indicates client-side errors. This means that the request made by the client has issues, which could be due to various reasons such as the requested resource not being found (404 error), bad requests (400 error), or unauthorized access (401 error).

These error codes inform clients that there is a problem with the request they have sent, rather than an issue on the server side. Understanding the significance of 4XX response codes is crucial when troubleshooting web-related issues, as it helps in identifying whether the fault lies with the user's input or request rather than with the server infrastructure or backend processes.