I am getting malicious error while open the url.
would help if you show more details
could be anything but this kind of error is usually because of self-signed certificates and not having the correct records on your dns.
You’ll need a system admin to troubleshoot this.
you definitely need a system admin to check your anti-virus configs. it could be blocking certificate signed by that domain.
I dont think people here would be able to help you
I found issue on Kaspersky anti virus.
Below urls are in one server
When I use erp.domain.com then it’s browse.
But when I use demo.domain.com then it gives error. So, i have rename the site name and demo to dev then it works fine.