The .dev extension is a secure namespace, meaning you will need an SSL Certificate installed on your website before it can be viewed in a browser. .dev domain names come pre-submitted to the HSTS Preload list, which in effect makes them HTTPS-only.
If you require an SSL certificate, you can purchase one through the MNC website or through your my.MNC account. Alternatively, if you have a hosting service with MNC, you will be provided with a free Let's Encrypt SSL Certificate. Let's Encrypt SSL Certificates are installed automatically on your web hosting service.
In the event that you purchase an SSL Certificate through a third party provider and need assistance installing it on your MNC hosting service, please contact our technical support team.
What will happen if I don’t have an SSL Certificate installed?
Frankly speaking, your website won’t be accessible and a browser error will occur when you visit your .dev domain name.