Browser Mixed Content Error — HTTP on HTTPS Page Fix

Fix Mixed Content errors when an HTTPS page loads HTTP resources. Browsers block insecure content. This guide covers everything you need to know about this topic, including common causes, step-by-step solutions, and answers to frequently asked questions.

Here are the key things to understand: Error: Mixed Content blocked. Browser: All browsers. Category: Security Error. HTTPS page loading HTTP (insecure) resources. Understanding these fundamentals will help you diagnose and resolve this issue more effectively.

The most common reasons this occurs include: Images or scripts loaded via HTTP on HTTPS page. Hardcoded HTTP URLs in page source. Third-party widget using HTTP. CDN not configured for HTTPS. Identifying the root cause is the first step toward finding the right solution.

To resolve this, follow these recommended steps: Change all resource URLs from http:// to https://. Use protocol-relative URLs: //example.com/script.js. Add Content-Security-Policy upgrade-insecure-requests header. Fix hardcoded URLs in database (WordPress: Search-Replace). Ensure CDN serves over HTTPS. If these steps do not resolve the issue, consider consulting additional resources or a qualified professional.

This article is part of our Browser Errors collection on Error Codes Wiki. We provide comprehensive, up-to-date information to help you find solutions quickly.