Observed Signal · Jul 2, 2026 · Technical Guide · Source: DEV Community · Impact: 1/5 · Sentiment: Neutral
Fix Mixed Content and SSL 'Not Secure' in WordPress
This technical how-to explains why browsers show a "Not Secure" label after moving a WordPress site to HTTPS (mixed content: some page resources still load over HTTP) and gives a step-by-step remediation. Recommended actions: verify a valid SSL certificate and site URLs in Settings → General; use the browser console to identify insecure http:// resources; run a serialized-safe database search-and-replace (or use trusted plugins) to update old HTTP URLs; force HTTPS site-wide (plugin or .htaccess redirect on Apache); and fully clear all caches. The guide warns against raw SQL replacements that break serialized data and recommends taking a backup before any database-wide changes. It also notes common tools and pitfalls and stresses clearing CDN/host/plugin/browser caches to confirm fixes.
Practical guidance for WordPress publishers and site operators to resolve mixed-content SSL issues; useful for site reliability and advertiser trust but not industry-shifting.
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Key Takeaways & Evidence Grounding
- Mixed content occurs when a secure HTTPS page loads one or more resources over insecure HTTP, causing browsers to flag the page as not fully secure.
- Confirm a valid SSL certificate (many hosts offer Let's Encrypt) and ensure WordPress Address (URL) and Site Address (URL) start with https://.
- Use the browser Developer Tools Console to list insecure http:// resource URLs so you can target fixes precisely.
- Fix insecure URLs with a serialized-safe database search-and-replace (or plugins that handle serialization), back up the database first to enable rollback.
- After fixing URLs, force HTTPS for all visitors (plugin or Apache .htaccess redirect) and clear all caches (WordPress, host, CDN, browser) so changes take effect.
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Fix ERR_TOO_MANY_REDIRECTS for WordPress behind AWS ALB
This technical troubleshooting guide documents a production fix for ERR_TOO_MANY_REDIRECTS when migrating WordPress from an Nginx SSL-terminating setup to one using an AWS Application Load Balancer (ALB) for SSL. Two root causes are explained and resolved: (1) ALB health checks failed with 301 because WordPress redirected health paths — solved by adding 301 to ALB success codes or pointing health checks to a 200 endpoint; (2) a redirect loop caused by Nginx redirecting HTTP to HTTPS while ALB performed SSL termination — solved by removing Nginx HTTPS redirects, listening only on port 80, setting fastcgi_param HTTPS on, and adding a wp-config.php snippet that sets $_SERVER['HTTPS']='on' when X-Forwarded-Proto is 'https'. Tested on Ubuntu 22.04, Nginx 1.24, WordPress 6.x.
wp-admin inaccessible: 6-step diagnostic protocol
This technical tutorial (published July 18, 2026 by WP Admin Lab on DEV) presents a six-step diagnostic protocol to troubleshoot inaccessible WordPress wp-admin pages. It categorizes three symptom families — 403 Forbidden, login redirect loop, and white screen of death — and gives concrete fixes: clear cookies and test in private mode, deactivate plugins via WP-CLI or by renaming the plugins folder, regenerate or repair .htaccess rules, and purge caches (browser, plugin, server, OPcache). The post includes exact commands (e.g., wp plugin deactivate --all, mv wp-content/plugins wp-content/plugins.off) and links to more detailed guides on wpadminlab.com.
Five Causes of Slow WordPress Sites
The article explains common reasons why WordPress sites remain slow despite optimization efforts and gives practical fixes. It identifies five main causes: too many plugins, heavy themes with unused code, missing or misconfigured caching, unoptimized images, and hosting not built for WordPress. Recommended actions include removing unused plugins, choosing a lightweight theme, enabling server-side caching (often provided by specialist WordPress hosts), serving images in modern formats (e.g., WebP) with lazy loading, and moving to managed WordPress hosting optimized for performance and uptime. The piece cites Raidboxes as an example of a managed WordPress host and notes a promotional 50% discount on first hosting contracts for moves completed by 2026-04-28.
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