How-to Add a SQL Server SPN

From a command prompt, enter the following:

To create an SPN for the NetBIOS name of the SQL Server use the following command:
setspn -A MSSQLSvc/{SQL Server computer name}:1433 {Domain\Account} 

To create an SPN for the FQDN of the SQL Server use the following command:
setspn -A MSSQLSvc/{SQL Server FQDN}:1433 <Domain\Account>