The SQL Server instance will be configured to use Mixed Mode authentication when installing in order to support Windchill. With Mixed Mode authentication, SQL Server provides a built-in SQL Server Authentication account with the username sa. This account is utilized only during the installation of the Windchill database and tables.

The Windchill installer uses the sa account to install the database and tables only. It is not used to access Windchill data from the application server post configuration. Best practice in general is for the sa account to have a strong password and to disable its access to the Windchill data when not installing.

During the database installation process, the PSI installer requires that you specify another new user name and password for database access. This user name provided will generate a database of the same name along with a local user within SQL Server.