Procedure for installing PostgreSQL 17 on Windows OS. ## Limitations 1. Please refer to [this page](/manual/install-postgresql-on-windows) for instructions on installing PostgreSQL 18 on Windows OS. 1. If you are logged in with a full-width character account, such as an Azure AD 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 17 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 17 1. Run the downloaded file. 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.