After upgrading(?) my Mac to MacOS Mojave, I found the hard disk access speed intolerable. Boot ups would take several minutes, and everything took far too long. I finally switched my Mac to boot up off of an external USB Solid State Drive (SSD). After cloning my hard drive to the SSD and switching it to be the default boot drive, the old(ish) Mac is once again pleasantly fast and usable. However, after this change, I found that, whenever I attempted to connect to my site, any browser I tried to connect to it through would give a message about being unable to connect to the server. One specific message shown in Google Chrome was ERR_CONNECTION_REFUSED The first part of the solution came from a Stack Overflow answer by adang . In a terminal, I ran sudo vi /etc/apache2/httpd.conf I then uncommented the following lines by removing the pound ("#") at the start of the line containing them: LoadModule authz_core_module libexec/apache2/mod_authz_core.s