Potential Security Risk Ahead Error on non-www urls

My issue is when I open my website without WWW then it doesn’t redirect to, in result page doesn’t open up and shows ‘Security Error’ like this:

Warning: Potential Security Risk Ahead

Firefox detected a potential security threat and did not continue to If you visit this site, attackers could try to steal information like your passwords, emails, or credit card details.

When i click on the Advanced Button given there, then it shows this.

Websites prove their identity via certificates. Firefox does not trust this site because it uses a certificate that is not valid for The certificate is only valid for


my .htaccess code is:

<IfModule mod_rewrite.c>
 RewriteEngine On
  RewriteBase /

  RewriteCond %{HTTP_HOST} ^admecindia\.co\.in$ [NC]
  RewriteRule ^(.*)$$1 [L,R=301]

  RewriteRule ^index\.php$ - [L]
  RewriteCond %{REQUEST_FILENAME} !-f
  RewriteCond %{REQUEST_FILENAME} !-d
  RewriteRule . /index.php [L]



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Bobby Iliev
Site Moderator
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June 18, 2020
Accepted Answer

Hi there @ravibhadauria143,

It looks like that your Let’s Encrypt was issued only for the www version of your domain name.

I would recommend issuing a new SSL certificate which would include both the non-www and the www version.

To do that, I would recommend following the steps from this tutorial here:

Basically, when you run the certbot command, you need to make sure that you specify the two versions:

  1. sudo certbot --apache -d your_domain -d www.your_domain

Hope that this helps! Regards, Bobby