accessing sql server 2016 express addition after install

At the workstation where the SQL Server instance is installed, launch the SQL Server Configuration Manager.The following troubleshooting steps provide suggestions for resolving these errors, not unique to the CS Professional Suite applications, and prohibit connection to the MS SQL Server instance that the application uses. Practice CS firms with Remote Entry enabled: Only the remote database will be available to open.You will not be able to access Practice CS until a Practice CS database is available. Practice CS firms with Remote Entry enabled: Practice CS was able to connect to your database server, but could not find an available Practice CS database to connect to.(provider: TCP Provider, error: 0 - The specified network name is no longer available.) A transport-level error has occurred when receiving results from the server.(provider: Shared Memory Provider, error: 0 - No process is on the other end of the pipe.) A transport-level error has occurred when sending the request to the server.Login failed for user 'CreativeSolutionsPracticeCsDatabaseOwner'. To resume the service, use the SQL Computer Manager or the Services application in Control Panel. (provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified) When connecting to SQL Server 20xx, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections. An error has occurred while establishing a connection to the server.(provider: TCP Provider, error: 0 - The remote computer refused the network connection.) Verify that the instance name is correct and that SQL Server is configured to allow remote connections. The server was not found or was not accessible. A network-related or instance-specific error occurred while establishing a connection to the SQL Server.

Accessing sql server 2016 express addition after install