WordPress Mixed Content Error After SSL Fix – WebFixHQ

Verify WordPress Address (URL) Settings & wp-config.php

The most common cause of mixed content after SSL is WordPress not being fully aware of its own new HTTPS URL. You need to ensure both the database and potentially your wp-config.php file correctly reflect the https:// protocol.

• Log into your WordPress admin dashboard, navigate to Settings → General. Ensure both "WordPress Address (URL)" and "Site Address (URL)" begin with https://. Click "Save Changes".
• If you cannot access the admin or changes revert, connect to your site via FTP/SFTP or your hosting file manager. Open the wp-config.php file in your WordPress root directory. Look for lines defining WP_HOME and WP_SITEURL. If they exist and use http://, update them to https://.

define('WP_HOME','https://yourdomain.com');
define('WP_SITEURL','https://yourdomain.com');

✓ 5-10 minutes. This is a crucial first check. If these are incorrect, other fixes might not stick.

Force HTTPS via .htaccess Redirect

Even if WordPress thinks it's HTTPS, the web server might still be serving content over HTTP. This step forces all incoming HTTP requests to HTTPS at the server level, ensuring browsers always load the secure version of your site.

• Access your site's root directory via FTP/SFTP or your hosting file manager.
• Locate the .htaccess file. Backup this file before editing.
• Add the following code at the very top, immediately after RewriteEngine On if it exists, or at the top of the file if not.

<IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond %{HTTPS} off
RewriteRule ^(.*)$ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]
</IfModule>

✓ 2-5 minutes. Clear your browser cache after applying. Incorrect edits can cause a 500 Internal Server Error. If your site breaks, revert to the backup. For Nginx servers, this logic goes into your Nginx configuration file. For deeper issues related to server configuration or custom code, you might find our guide on WordPress Broken After Editing Functions.php, htaccess or Custom Code helpful.

Database Search & Replace for Hardcoded URLs

This is where problems like wordpress mixed content blocking images and wordpress mixed content breaking checkout often originate. Post content, image URLs, custom fields, and widget settings frequently contain old http:// URLs that WordPress's internal settings or .htaccess can't fix.

• Backup your database before proceeding. You can use a plugin like UpdraftPlus, your hosting provider's backup tool, or phpMyAdmin.
• Option A (Recommended for precision): Use a dedicated search and replace script like interconnect/it's Search and Replace DB Script or a plugin like "Better Search Replace". These tools safely handle serialized data.
• Option B (Manual via SQL - advanced): Access your database via phpMyAdmin or a similar tool. Run the following SQL queries, replacing yourdomain.com with your actual domain and wp_ with your table prefix if it's different.

UPDATE wp_options SET option_value = replace(option_value, 'http://yourdomain.com', 'https://yourdomain.com') WHERE option_name = 'home' OR option_name = 'siteurl';
UPDATE wp_posts SET guid = replace(guid, 'http://yourdomain.com','https://yourdomain.com');
UPDATE wp_posts SET post_content = replace(post_content, 'http://yourdomain.com', 'https://yourdomain.com');
UPDATE wp_postmeta SET meta_value = replace(meta_value,'http://yourdomain.com','https://yourdomain.com');
-- Consider wp_termmeta, wp_comments, etc., if issues persist.

✓ 10-30 minutes. This is often the most effective fix for persistent mixed content. Incorrect execution can corrupt your database. Always backup first.

Inspect Browser Console for Specific Mixed Content Resources

Your browser's developer tools will tell you exactly which resources are being loaded insecurely. This helps pinpoint the remaining offenders after general fixes, especially for stubborn wordpress images not loading after ssl install.

• Open your website in Chrome, Firefox, or Edge.
• Right-click anywhere on the page and select "Inspect" or "Inspect Element".
• Go to the "Console" tab.
• Look for errors like: Mixed Content: The page at 'https://yourdomain.com/' was loaded over HTTPS, but requested an insecure image 'http://insecure.resource.com/image.jpg'. This request has been blocked; this content must be served over HTTPS.
• Note the exact http:// URL of the blocked resource. This URL will guide your next steps (e.g., if it's an image, check the post it's in; if it's a script, check your theme/plugins).

// Example Console Error
Mixed Content: The page at 'https://yoursite.com/' was loaded over HTTPS, but requested an insecure image 'http://yoursite.com/wp-content/uploads/2023/01/old-banner.jpg'. This request has been blocked; this content must be served over HTTPS.

✓ 5-15 minutes. This diagnostic step is critical for identifying stubborn issues.

Audit Theme and Plugin Files for Hardcoded http URLs

Some themes or plugins might have hardcoded http:// URLs directly in their PHP, JavaScript, or CSS files, bypassing WordPress's URL settings and database. This is less common in well-coded assets but can happen, especially with older or custom solutions.

• Via FTP/SFTP, download your active theme's folder (wp-content/themes/your-theme-name/) and any recently installed or updated plugin folders (wp-content/plugins/).
• Use a code editor (like VS Code, Sublime Text) with a "Find in Files" or "Global Search" function. Search for http://yourdomain.com and also generic http:// within these directories.
• If you find instances, carefully replace http:// with https://. For dynamic assets, ensure they use WordPress functions like get_template_directory_uri() or plugins_url() which respect the site's protocol.
• Alternatively, for advanced users on SSH:

grep -r "http://yourdomain.com" /path/to/wordpress/wp-content/themes/your-theme/
grep -r "http://yourdomain.com" /path/to/wordpress/wp-content/plugins/your-plugin/

✓ 30-60+ minutes. This is a deeper dive and requires caution. Always backup files before editing. If you find a hardcoded URL in a third-party plugin, consider contacting the developer or finding an alternative. This is a scenario where issues similar to those described in WordPress Broken After Editing Functions.php, htaccess or Custom Code can occur if not careful.