The official and safest source for the driver is the PostgreSQL FTP site and its mirrors.
Downloading the PostgreSQL ODBC driver is easy. Installing the right version (bitness, Unicode, official source) and configuring network access is where most people fail. postgres odbc download
: Right-click the .zip file, extract it, and double-click the .msi installer. The official and safest source for the driver
The Case of the Missing Driver