Returning Real-time Preview browser to its original state

I used to use Microsoft Edge in the real time preview to view my work. It worked fine. However because I had to work with AJAX and php files, I set up a local host/server (Apache server/localhost:80) and that works well. 

I now want to return to previewing my work, not through the local host, but Microsoft Edge or Chrome, as orignally done, before I inserted the local host/server.

Does anyone know how I can return Dreamweaver's original real-time preview and stop having to use the local server? Also, if you could spare me the time and effort, if I want to return to my local host/server, how do I flip back to that local host/server, after I hopefully am able to preview my work in Edge or Chrome.

Thanks, Gary