List Of Common HTTP Error Status Codes

List Of Common HTTP Error Status Codes
When you access any application over internet or intranet, every HTTP request that is received by a server is responded to with an HTTP status code which is a 3 digit code, and are grouped into various different classes such as 1xx (Informational), 2xx (Success), 3xx (Redirection), 4xx (Client Error) and 5xx (Server Error).

The class of a status code can be quickly identified by its first digit. This article focuses only on identifying and troubleshooting the most commonly encountered HTTP error codes, i.e. 4xx and 5xx status codes which are as listed below:

S.No.	Status Code	Name
1	Code = 400	Bad request
2	Code = 401	Authorization required
3	Code = 402	Payment required
4	Code = 403	Forbidden
5	Code = 404	Not found
6	Code = 405	Method not allowed
7	Code = 406	Not acceptable
8	Code = 407	Proxy authentication required
9	Code = 408	Request Timeout
10	Code = 409	Conflict
11	Code = 410	Gone
12	Code = 411	Length required
13	Code = 412	Precondition failed
14	Code = 413	Request entity too large
15	Code = 414	Request URI too large
16	Code = 415	Unsupported media type
17	Code = 416	Request range not satisfiable
18	Code = 417	Expectation failed
19	Code = 422	Unprocessable entity
20	Code = 423	Locked
21	Code = 424	Failed dependency
22	Code = 500	Internal server error
23	Code = 501	Not Implemented
24	Code = 502	Bad gateway
25	Code = 503	Service unavailable
26	Code = 504	Gateway timeout
27	Code = 505	HTTP version not supported
28	Code = 506	Variant also negotiates
29	Code = 507	Insufficient storage
30	Code = 510	Not extended

If you encounter any error codes that were not mentioned in this article, feel free to discuss them in the comments!