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CPanel Invalid License File After Changing Hostname Error

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After changing web host server hostname or via shell command, cPanel may display “Invalid License File” error message
The symptom appears immediately on next navigation, and even after administrator or cPanel user logout and login again to cPanel. 
The error occurs because changing hostname will invalidate the cPanel license.


The solution to invalid cPanel license is easy. Simply login to the server via SSH as root (or su to root), and run the following command:

/usr/local/cpanel/cpkeyclt

The command will reset and refresh update the cPanel license file with the new current hostname, 

and push the change to cPanel’s license verification servers auth.cpanel.net and verify.cpanel.net.