So I originally had this thread as “How to modify webserver hostheader” but turns out that is not where the issue is. We are launching with Zammad and looking to go with HTTP (certs will be done once we’ve removed ourselves from the current vendors contractual dates). Since creating the post I’ve found out it’s nothing to do with HTTP headers but Chrome & Edge. Firefox views fine and incognito Chrome. Despite me typing http://helpdesk.my.org:80 Chrome and Edge start a connection on HTTPS. Got a workaround for now but if anyone could share “allow HTTP on LAN” for Chrome that would be great.