HTTP 401: 401 Unauthorized

What Does HTTP 401 Mean?

HTTP 401 Unauthorized indicates that the request requires user authentication credentials.

Causes and How to Fix HTTP 401

Missing or expired authorization tokens, invalid API keys, or incorrect credentials.

SEO & Search Engine Impact

Expected for protected portals. Should never appear on public marketing landing pages.

Web Server Configuration (Nginx & Apache)

Configure custom error handling in your web server:

# Nginx Custom Error Handler
error_page 401 /401.html;
location = /401.html {
    root /var/www/html;
    internal;
}