Have you downloaded a version of your remotely hosted website to your local computer and when you run it the homepage downloads rather that displays in your browser?
This is the situation I had after I downloaded a copy of my Wordpress website from my 1&1 Hosting that was installed with the Click and Build tool. I followed my own instructions to create a local version of a remotely hosted WordPress website however I found that when I tried to load this local version in a web browser, the homepage did not show, however it downloaded to our Downloads folder.
The ‘.htaccess’ file! In this file I found that 1&1 had added a line (line #86) that tells PHP files to be executed by a processor that would not work for us locally using MAMP.
Just comment out line #86 in ‘.htaccess’ :D.