Unable to Log in as Server Administrator After Activating Creator License

Issue 

In some cases, after activating a Creator license when Tableau Server was previously using a trial license, Server Administrators may be unable to log in, and will be prompted with the following error:

Your account is not licensed.
For help, contact your Tableau Server administrator.

Cause

Tableau Server Administrators will always occupy the highest license activated on the Tableau Server environment.  If a lower amount of Creators are purchased than were active with the trial license, some Server Administrators may be unlicensed.