When you ran the installation for PHDwin, you should have received a prompt about installing Microsoft SQL Server. If you chose the “No” option or you need to install a different version of SQL Server, this section covers doing a manual install of Microsoft SQL Server. The steps to install Microsoft SQL Server are slightly different than installing SQL Server Express, which is covered in a separate section. PHDwin is compatible with Microsoft SQL Server 2016 and newer. However, we highly recommend utilizing 2019 or newer if possible.
Note that the instance name cannot contain any special characters (besides underscore) or spaces. It is also important to leave the SQL Server Browser to start automatically if you are installing on a server. This means that the instance will show up when users browse for an instance to connect to within PHDwin.