Knowledge Base   /   Web Development

Understanding Common Website Error Codes (404, 500, & More)

Posted on 06 August 2026 01:48 am

When a website encounters an issue, your browser displays a three-digit HTTP status code. Understanding these codes helps identify whether the issue is on your end or requires server-side support.

Common Client Errors (4xx)

  • 404 Not Found: The requested web page or file does not exist. This usually happens if a link is broken, a page was deleted, or the URL was mistyped.

  • 403 Forbidden: You do not have permission to view the page or resource. This is often caused by incorrect file permissions or access restrictions.

Common Server Errors (5xx)

  • 500 Internal Server Error: A generic error indicating something went wrong on the web server. This commonly occurs after plugin conflicts, code edits, or .htaccess file errors.

  • 502 Bad Gateway / 504 Gateway Timeout: The server acting as a gateway did not receive a timely response from the upstream server, often caused by high traffic or server overload.

What to Do Next For 404 errors, double-check the URL path. For 500 or 502 errors, try refreshing after a few minutes. If a server error persists on a website hosted with us, contact support@bdlgroup.net so our team can check the server logs and resolve it.