Originally Posted by VIPoint
Do you have a valid cpanel license? An invalid/expired cPanel will also not let you to login to your WHM control panel. Verify your license:
I'd the same problem and this thread solved it within a minute.
The cPHulk blocked a lot of hackers and seemed to have closed down.
So this is definitely a step you should take first.
1) Make sure running this command as root on the server gives the IP that you expect: lynx -dump ......showip.cgi
2) Run the following as root on the server: /usr/local/cpanel/cpkeyclt
Thanks for the tip.