Using iframe - connection refused

Is have a concrete website, I want to use an iframe for a shop on the same url/shop, but I havean error url connection refused.
Can If fix this?

I have latest version of concrete

Thats more likely a webserver configuration issue than a concreteCMS issue. Do you have access to webserver config?

If you are running a managed webspace, the admin might help.

I think it’s some header-related stuff: the website that’s serving the iframe content may tell the browser to inhibit rendering inside iframes (the browser console maybe contains an error message stating that?)