1. “Not Secure” Warning in Browser:
- Cause: The browser displays a “Not Secure” warning when it detects an invalid, expired, or missing SSL certificate.
- Troubleshooting:
- Verify your SSL certificate is valid and not expired using an SSL checker tool.
- If the certificate has expired, renew it with your SSL provider.
- Ensure your SSL certificate is properly installed on your hosting server.
2. Mixed Content Warnings:
- Cause: Mixed content occurs when a secure page (HTTPS) includes resources (e.g., images, scripts, stylesheets) served over HTTP.
- Troubleshooting:
- Use a plugin like “Really Simple SSL” to identify and fix mixed content issues.
- Manually inspect your site’s source code to locate and update HTTP links to HTTPS.
- Clear your browser’s cache after making changes.
3. SSL Certificate Mismatch:
- Cause: SSL certificate mismatch occurs when the domain name on the certificate does not match the website’s domain.
- Troubleshooting:
- Double-check your SSL certificate to ensure it matches your domain name.
- If there’s a mismatch, contact your SSL provider to issue a new certificate with the correct domain name.
- Verify your website’s DNS settings to ensure they are correctly configured.
4. SSL Redirect Loop:
- Cause: An SSL redirect loop can occur when there are conflicting redirect rules between your server and WordPress settings.
- Troubleshooting:
Check your .htaccess file for duplicate or conflicting redirect rules and adjust them as needed. - Review your WordPress settings (e.g., General Settings) to ensure the Site URL and Home URL fields use HTTPS.
- Disable any plugins that may be causing the loop temporarily to identify the issue.
5. SSL Certificate Not Installed Correctly:
- Cause: Improper SSL certificate installation can lead to browser warnings and security issues.
- Troubleshooting:
Re-install the SSL certificate following your hosting provider’s instructions. - Ensure that all required certificate files (certificate, intermediate certificate, private key) are properly configured on your server.
- Contact your hosting provider for assistance if needed.
6. SSL Certificate Chain Incomplete:
- Cause: An incomplete certificate chain occurs when one or more intermediate certificates are missing.
- Troubleshooting:
- Use an online SSL checker to verify the completeness of your SSL certificate chain.
- Contact your SSL provider to obtain any missing intermediate certificates.
- Update your SSL certificate installation on your server with the full chain.
7. Outdated Plugins or Themes:
- Cause: Outdated plugins or themes may cause compatibility issues with SSL.
- Troubleshooting:
- Ensure your WordPress plugins and themes are up to date.
- Test your website for any new SSL issues after updating.
Conclusion:
By addressing these common SSL certificate issues and following the troubleshooting steps provided, you can resolve SSL-related problems in WordPress and maintain a secure, trustworthy website for your visitors. If you encounter persistent SSL problems, consult your hosting provider or SSL certificate provider for further assistance.
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