On some cases the Automatic installation of SQL server on the machine might fails due to conflicts found on the machine or other issues, in those cases we recommend that SQL server will be installed manually.
This Article will show you how to install a SQL server step by step.
if you desire to install the SQL server not at default Instance and "sa" password you will have to set AxTraxNG server SQL connection details following the SQL server you installed.
Please note when using SQL 2017, "sa" login is disabled by default and have to be enabled so AxTraxNG can work.

The Password mentioned in this article is the default AxTraxNG password and should be changed
Requirements:
- .NET 4.0 is a requirement for SQL Server 2012. SQL Server installs .NET 4.0 during the feature installation step. If you are installing the SQL Server Express editions, ensure that an Internet connection is available on the computer. SQL Server Setup downloads and installs the .NET Framework 4 because it is not included in the SQL Server Express media.
- If you run Setup on a computer with the Windows Server 2012 or Windows 8 operating system, the SQL Server Setup automatically downloads and installs the .NET Framework 3.5 SP1. This process requires internet access. If there is no internet access, it is required to download and install .NET Framework 3.5 SP1 before you run Setup to install any of the above mentioned components.