Error "Tableau Server requires a 32-bit driver to connect to the database server 'localhost', but the 64-bit driver is installed."

KNOWLEDGE BASE

Error "Tableau Server requires a 32-bit driver to connect to the database server 'localhost', but the 64-bit driver is installed."

Published: 20 Jan 2014
Last Modified Date: 22 Mar 2019

Issue

When accessing Tableau Server administrative pages or reports, the following error might occur:

Session Ended by Server

DataSourceException: Tableau Server requires a 32-bit driver to connect to the database server 'localhost', but the 64-bit driver is installed. Visit http://www.tableausoftware.com/drivers to download driver setup files. Specified driver could not be loaded due to system error 126 (PostgreSQL Unicode).

Environment

Tableau Server

Resolution

Uninstall the PostgreSQL driver(s) from the Control Panel (psqlODBC)
Note: If more than one PostgreSQL driver is installed, uninstall all of them.
Download and install the PostgreSQL driver from the Drivers & Activation page.
Restart Tableau Server.