Event Server is on a different machine than the Event Processor. Needed to migrate; the Event Server to a more powerful machine. After installing and moving the database, cannot connect to the Event Server.
Database server is MS-SQL.
The 'anyone' userid was missing in the new database with its password.
Run the 'sp_changedbowner' and 'sp_change_users_login' stored procedures to give the necessary permissions to the 'AutoSys' and 'anyone' userids.
The syntax of these MS-SQL stored procedures are:
sp_changedbowner @loginame = 'AutoSys' sp_change_users_login @UserNamePattern = 'anyone' , @Password = 'anything'