How to update your cPanel license:
If you get "Invalid License File" when you login to cPanel after a hostname change you need to update your cPanel license file by:
1. Login to shell
2. Run the following from command line: /usr/local/cpanel/cpkeyclt
NOTE: The error page should go away and you can see your WHM.
Need Additional Help? Go to "Live Chat" on the Hostwinds web site if you require further assistance.