Postgresql Odbc Driver Windows 7 32 Bit New! May 2026

The Excel VBA code was using ADODB.Connection and setting CursorLocation = adUseClient . The PostgreSQL 32-bit ODBC driver, version 9.3+ on Windows 7, had a known but rarely documented bug: when adUseClient was set before opening the connection, the driver failed to negotiate the bytea type mapping correctly with the 32-bit PostgreSQL client library — especially if any column in the queried table was type bytea (even if not selected). The driver would throw a generic -2147467259 instead of a meaningful error.

Here’s a solid, realistic troubleshooting story based on a genuine pain point with the PostgreSQL ODBC driver on Windows 7 32-bit. The Ghost in the 32-Bit Pipeline postgresql odbc driver windows 7 32 bit

It was 2018, and I was maintaining a legacy production line reporting system for a mid-sized manufacturing plant. The core database was PostgreSQL 9.6 running on a Linux server. The front-end was a vintage Windows 7 Professional 32-bit machine in the quality control lab. On this machine ran an ancient Excel 2010 VBA macro that pulled defect data every 15 minutes, generated charts, and printed them to a network label printer. The Excel VBA code was using ADODB

For five years, it worked perfectly. Then one Monday, the chart stopped updating. Here’s a solid, realistic troubleshooting story based on