If you do not have these entries on the Start menu, SQL Server is not correctly
installed. Run Setup to install the SQL Server Database Engine.
In SQL Server Configuration Manager, on the left pane, click SQL Server Services.
The right pane lists several services that are related to SQL Server. If the Database Engine
is installed, the Database Engine service is listed as SQL Server (MSSQLSERVER) if it is the default instance;
or SQL Server (<instance_name>), if the Database Engine is installed as a named instance. Unless the
instance name is changed, SQL Server Express installs as a named instance with the name SQLEXPRESS. A
green triangle icon indicates that the Database Engine is running. A red square icon indicates that the
Database Engine is stopped.
To start the Database Engine, in the right pane, right-click the Database Engine, and then click Start.
If the SQL Server is not installed please install the SQL Server according to the installation manual of TEOS.
SQL Server is not configured correctly
Verify if the correct settings are configured
Press the windows button and type SQL configuration and open the SQL Configuration manager and
check the following steps:
On the left side select: SQL Server Network Configuration -> Protocols For SQLEXPRESS.
On the right side enable all the options by right clicking the options and select enable.