A 404 error code is an Hypertext Transfer Protocol status response code (or HTTP status code) indicating that the page on a website a user is trying to reach can’t be found. In other words, while the server is reachable, the specific page can’t be reached. For example, the following is an example of a 404 error page from Pixar:
Users will typically receive one of the following error codes:
404 error codes typically appear because either:
HyperText Transfer Protocol (HTTP) is the protocol used by the Web that defines how messages are formatted and transmitted between devices...
HTTP status codes are transmitted by a server in response to a request from a client. The status codes indicate whether a request was...
A server is a computer that provides a service (such as providing data) to other computers and its users, known as the clients.