| Code | Meaning | What to try |
|---|---|---|
| 400 Bad Request | The browser sent a request the server couldn't understand | Clear browser cache and cookies; check the URL |
| 401 Unauthorised | Login needed | Check the username/password for a protected folder |
| 403 Forbidden | Access denied | Check permissions (folders 755, files 644), an index file exists, and .htaccess isn't blocking you |
| 404 Not Found | The page doesn't exist | Check the file exists with the exact name (names are case-sensitive); for WordPress re-save Settings › Permalinks |
| 500 Internal Server Error | Something failed on the server | Check the error log; rename .htaccess to test; check recent plugin/theme changes |
| 503 Service Unavailable | Server busy or resource limit reached | Check Resource Usage in cPanel; enable caching |
| 508 Resource Limit Reached | Your account hit its LVE limits | See How to understand resource limits |
If the error affects every site on your account or you can't find a cause, raise a ticket with the URL and the time you saw the error.
