Apache already running on port 80/443 (socks already running)

Socks already running, apache wont start

[root@hostname ~]# lsof -iTCP:443 (or whatever port you need)
COMMAND   PID   USER   FD   TYPE    DEVICE SIZE NODE NAME
perl    27795 apache    4u  IPv6 337949286       TCP *:https (LISTEN)
[root@hostname ~]# kill -9 27795

Now just restart and it should be fine, unless you have a broken config file.

Try /usr/local/psa/admin/bin/httpdmng --reconfigure-all with plesk