How to Fix SSL Certificate Errors in WordPress

How to Fix SSL Certificate Errors in WordPress

Seeing SSL warnings like “Your connection is not private,” “ERR_SSL_PROTOCOL_ERROR,” or “SSL certificate not trusted”? These errors indicate a problem with your SSL certificate, and they can prevent users from accessing your WordPress site securely.

Let’s go over how to fix the most common SSL certificate issues using WordPress and cPanel.

What Causes SSL Certificate Errors?

- SSL certificate not installed or expired
- Certificate doesn’t match the domain (common with www vs. non-www)
- Mixed content (HTTPS and HTTP elements)
- Browser cache issues or DNS delays
- Wrong site URL configuration in WordPress

Step-by-Step: How to Fix SSL Errors in WordPress

1. Check Your SSL Certificate

Use online tools to test your certificate:

- https://www.sslshopper.com/ssl-checker.html
- https://www.whynopadlock.com/

These will tell you if your SSL is active, valid, and correctly configured.

2. Install or Renew Your SSL Certificate

If your site doesn’t have an SSL certificate or it’s expired:

- Log into cPanel > Security > SSL/TLS or Let’s Encrypt
- Use AutoSSL to install a free SSL certificate (most hosts support this)
- If using a paid certificate, upload it under SSL/TLS Manager

3. Update Site URL to HTTPS

In your WordPress dashboard:

- Go to Settings > General
- Change both the “WordPress Address (URL)” and “Site Address (URL)” to begin with `https://`

4. Force HTTPS in .htaccess

Redirect all HTTP traffic to HTTPS:

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

Place this in your .htaccess file (via File Manager or FTP).

5. Fix Mixed Content Errors

Some assets (images, scripts) may still load over HTTP.

- Use the “Really Simple SSL” plugin to detect and fix these automatically
- Or manually update your media URLs to HTTPS in the database using plugins like “Better Search Replace”

6. Clear Browser, CDN, and WordPress Caches

- Clear your browser cache or try incognito mode
- Purge your cache if you use Cloudflare or another CDN
- Clear your WordPress caching plugin cache

7. Check Domain and Subdomain Settings

If SSL errors only affect a subdomain (like blog.example.com):

- Make sure the subdomain has its own SSL certificate installed
- Some certificates only cover the root domain, not subdomains

8. Renew SSL Automatically

Set up automatic SSL renewals via AutoSSL or Let’s Encrypt to avoid future issues. Most SSLs renew every 90 days.

Final Thoughts

SSL errors can discourage visitors and hurt your rankings—but with cPanel and WordPress tools, they’re quick to fix. Just follow these steps to secure your site and gain users’ trust.

Supercharge Your Hosting Experience with RDPCore.com

At RDPCore.com, we make security simple with:

- Free SSL certificates on all hosting plans
- One-click HTTPS and auto-renewals
- Full cPanel access for advanced SSL control
- 24/7 support for mixed content, redirects, and browser errors

Keep your website secure and trusted—visit https://rdpcore.com today!