What does Error 400 (Bad Request) mean?
Error 400 (Bad Request) is an HTTP status code that indicates the server cannot handle a client request due to invalid or malformed data.
- A request with no payload, such as a GET request without any parameters, will often result in Error 400.
- Invalid URL formats can also cause this error, especially for requests with query strings.
- Missing required headers or incorrect header values can lead to an invalid response.
When do you see Error 400 (Bad Request) in your website?
Error 400 is commonly seen when the client sends a request that contains invalid or incomplete data.
- Typical examples include sending an empty form, using incorrect URL formats, or missing required headers.
- Applications that handle user input, such as web applications with forms and APIs, are more likely to see this error.