Sometimes you need to change some parameters to your apache virtual host. Then, when you need to check the changes, in plesk you'd probably will have to execute the next command to see the changes:
/usr/local/psa/admin/sbin/httpdmng --reconfigure-domain exampledomain.com
Otherwise, restarting apache (/etc/init/apache2 restart) could not make the trick.
I allways forgot this little trick... never more, because Programadores Web will remind it me :-).
Contradictory? Yes, a bit, but you cannot allways choose the systems and architecture in which you are working.
solution? Runing apache under linux instead of runing wamp or some weird solutions like that (i don't like at all, sorry).
First, install vbox: https://www.virtualbox.org/
Second, download the iso of your preffered linux distro, and install it.
Third, when you machine is running, go to Devices>install guest additions.
This is the scenario. You installed vbox in your Mac, windows or Linux computer. Then you´ve installed Centos or Red Hat (or any other Red Hat flavor) in this virtual box.
Next step, installed httpd (apache2) and... even it is running and httpd status confirms it with a "running" message, it cannot be accesible from your host machine.
The problem is on iptables. Red Hat by default denies access to this machine from other (external) machines. Solution? Very easy, open iptables file: