Resolving error launching the Content Author Admin - An error occurred while communicating with the database

Products affected: EngageOne Content Author
The Content Author DISTRIBUTED installation ran without errors.  The CCM Configuration Tool had green checkmarks (success)  for each component installed.  Upon launching the Content Author Admin, the following error occurs

An error occurred while communicating with the database.  Please see the application event log for more detailed information.
Opened SQL Server Management Studio and changed the CCMContentAuthor database to use user MSG1User AND the database owner. Also changed ResourceServer database to use ResourceServerUser user as the owner of that database.  
Stopped and restarted the SQL Server.
UPDATED:  September 18, 2017