Trying to apply the instructions for the Vagrant tutorial to Ubuntu Server 14.04 Trusty Tahr and I ran into a problem when trying to load up the localhost in order to take a peek at my shared directory. I kept getting an Apache error, which meant that the web server was running locally, just nothing was getting served. Running down the error, I came across this Ask Ubuntu post. Rather than trying to mess with any conf files, I simply dropped an html directory to /var/www/ and voila - it worked.