Procedure for installing PostgreSQL on Windows OS. ## Limitations If you are logged in with a full-width character account, such as an AzureAD dept account, an error may occur in the PostgreSQL installer. In that case, log in again with a half-width character account and run the installer. ## Download PostgreSQL 1. Access the following URL and download the module version you want to install from Windows x86-64. https://www.enterprisedb.com/downloads/postgres-postgresql-downloads  ## Install PostgreSQL 1. Run the downloaded file.Click 'Yes' if User Account Control appears. Click the "Next >" button.  1. Change the installation destination (Installation Directory) as appropriate and click the "Next >" button. (If there are no special requirements, click the "Next >" button.)  1. Confirm that "PostgreSQL Server" and "pgAdmin 4" are checked and click the "Next >" button. (Select other components as appropriate. If there are no special requirements, check all and click the "Next >" button.)  1. Change the data file storage destination (Data Directory) as appropriate and click the "Next >" button. (If there are no special requirements, click the "Next >" button.)  1. Enter the postgres user password and click the "Next >" button. The password entered here will be used to set the connection string in "Rds.json", so be sure to record it.  1. Change the port number as appropriate and click the "Next >" button. (If there are no special requirements, click the "Next >" button.)  1. Change the locale as appropriate and click the "Next >" button. (If there are no special requirements, click the "Next >" button.)  1. Click the "Next >" button.  1. Click the "Next >" button.  1. Wait until the installation is complete.  1. Click the "Finish" button to complete this procedure.