Pretty much all the time, there’s an interaction between the browsers and servers. This communication is triggered every time someone in the world requests a website. Servers have their own way of informing the status of that request: the HTTP codes. There are five HTTP code categories. Statuses are expressed through three numbers. The first number indicates the type of status.
- 1XX, informational responses.
- 2XX, successful responses.
- 3XX, redirects.
- 4XX, client errors (like error 404).
- 5XX, server errors.
What is error 404?
Error 404 means “not found”. It is a type of HTTP response status code that points to the category of “client errors”.