ERR_SSL_PROTOCOL_ERROR This site can’t provide a secure connection


I am a newbie developer and I am trying to deploy my developer portfolio on a custom domain. Originally it was deployed on netlify at and I bought a custom domain name on and my custom domain name is The custom domain was not secure but I was able to see my website at my house till yesterday.

Today, I am on campus and I keep getting this error, This site can’t provide a secure connection ERR_SSL_PROTOCOL_ERROR.

I tried setting SSL on ionos website but it says it has to be on their nameserver which I have changed it to be on netlify’s nameserver.

I was super excited to have my portfolio on a custom domain but it’s not happening right now. Please help me resolve this SSL_PROTOCOL_ERROR. Thank you.

Hey there, @bikash30851 :wave:

Welcome to the Netlify Forums. This thread has a customer who encountered the same obstacle. They have shared their solution. I would suggest starting here: