Server Error HTTP Status Codes – Full List and Explanations

Server Error HTTP Status Codes explain common response patterns for this HTTP class.

Code List

HTTP 500 Internal Server Error — HTTP 500 Internal Server Error indicates a server errors response outcome. Guide
HTTP 501 Not Implemented — HTTP 501 Not Implemented indicates a server errors response outcome. Guide
HTTP 502 Bad Gateway — HTTP 502 Bad Gateway indicates a server errors response outcome. Guide
HTTP 503 Service Unavailable — HTTP 503 Service Unavailable indicates a server errors response outcome. Guide
HTTP 504 Gateway Timeout — HTTP 504 Gateway Timeout indicates a server errors response outcome. Guide
HTTP 505 HTTP Version Not Supported — HTTP 505 HTTP Version Not Supported indicates a server errors response outcome. Guide
HTTP 506 Variant Also Negotiates — HTTP 506 Variant Also Negotiates indicates a server errors response outcome. Guide
HTTP 507 Insufficient Storage — HTTP 507 Insufficient Storage indicates a server errors response outcome. Guide
HTTP 508 Loop Detected — HTTP 508 Loop Detected indicates a server errors response outcome. Guide
HTTP 509 Unassigned — HTTP 509 is currently unassigned in the IANA registry and should not be emitted by modern applications. Guide
HTTP 510 Not Extended — HTTP 510 Not Extended indicates a server errors response outcome. Guide
HTTP 511 Network Authentication Required — HTTP 511 Network Authentication Required indicates a server errors response outcome. Guide

Use it to quickly narrow debugging between routing, authentication, redirects, and server-side failures.