Localhost refused to connect is a type of network connection error you might encounter when working on a project on your local web server. It is triggered if the firewall wrongly blocks your server or you're using the wrong port.
Why is localhost not running?
If DNS collects too many records or some of the records get corrupt, it may fail to function. Such an issue can result in localhost refusing to connect. The best way to ensure DNS is not preventing the localhost connection is to clear the DNS cache and delete all saved DNS lookup information.
What is error 127.0 0.1 refused to connect?
Your client and server are running on different devices. Your client is trying to connect to the local loopback IP 127.0. 0.1 , which will work only if the server is running on the same device as the client. That is why you are getting "connection refused" - there is no server listening locally at 127.0.