Error "Unable to connect ... Loading the Teradata ICU Library Failed" Loading Teradata View in Tableau Server

Published: 23 Aug 2018
Last Modified Date: 02 Jan 2019


When attempting to load a view connected to Teradata data source in Tableau Server 2018.2, the following error occurs:
Unable to connect to the ODBC Data Source. Check that the necessary drivers are installed and that the connection properties are valid.
[Teradata][ODBC Teradata Driver] Loading the Teradata ICU Library Failed. Error is: 126
The driver returned invalid (or failed to return) SQL_DRIVER_ODBC_VER: 03:80
Unable to connec to the server "<servername>". Check that the server is running and that you have access privileges to the requested database.


  • Tableau Server 2018.2.0
  • Tableau Server 2018.3.0
  • Teradata


Option 1

Upgrade to Tableau Server 2018.2.3 or later. For more information, see Upgrade Tableau Server.

Option 2

  1. Fully remove the existing Teradata driver (by uninstalling via the Add or Remove Programs list).
  2. Restart the Tableau Server.
  3. Download and install the Teradata driver version


This behavior is related to a known issue which is currently under investigation.

Additional Information

Users who experience this issue may be able to connect to Teradata without issue from Tableau Desktop on the computer running Tableau Server, even though an error is occurring for Tableau Server 2018.2.

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