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HTTP Code: 500 (Internal Server Error)

HTTP Status Code Reference

Status Category

5xx — Server Error

Meaning & Definition

The server encountered an unexpected condition that prevented it from fulfilling the request.

Common Causes

  • Uncaught application code exceptions
  • Database connection loss crashes
  • Syntax errors in runtime scripts (e.g. PHP/Node syntax crash)

How to resolve HTTP code errors

1. Inspect Logs: Check server logs (e.g. error.log) to locate runtime exceptions or database disconnects.

2. Test Endpoint: Use our Uptime Checker or redirects prober to verify response headers and payload size.

3. Configure Rules: Implement custom redirect rules or error fallback paths below in Nginx/Apache config.

Nginx Configuration Setup

error_page 500 502 503 504 /50x.html;
location = /50x.html {
  root /usr/share/nginx/html;
  internal;
}

Apache Configuration Setup

ErrorDocument 500 /500.html

Standard HTTP Status Codes

HTTP 100HTTP 200HTTP 201HTTP 204HTTP 301HTTP 302HTTP 304HTTP 400HTTP 401HTTP 403HTTP 404HTTP 429HTTP 500HTTP 502HTTP 503HTTP 504

HTTP Diagnostic Tools

Website Uptime Checker — Monitor HTTP response codes in real-timeHTTP Headers Inspector — Examine server response headers and status codesSSL Certificate Checker — Verify HTTPS configuration and redirectsIT Expert AI — Ask about server configuration and HTTP issues

Authoritative Standards

IETF RFC 9110 — HTTP Semantics (June 2022, current standard)MDN Web Docs — HTTP Response Status Codes ReferenceIANA HTTP Status Code Registry

HTTP status codes standardized in RFC 9110. IANA maintains the official registry of all assigned codes.