Error "The drivers...are not properly installed" Connecting to SAP BW

Published: 30 Jul 2014
Last Modified Date: 26 Aug 2019


When you try to connect to SAP BW from Tableau Desktop, or open a workbook with a SAP BW connection from Tableau Server, one of the following errors might occur:
An error occurred while communicating with SAP NetWeaver Business Warehouse.
The drivers necessary to connect to this database server are not properly installed. Visit http:/ to download driver setup files.

Database error 0x80040154: Class not registered.

Unable to connect to the server. Check that the server is running and that you have access privileges to the requested database.


Session Ended by Server
An unexpected error occurred on the server. If you continue to receive this error please contact your Tableau Server Administrator.
DataSourceException: Database error 0x80040154: Class not registered



  • Tableau Desktop
  • Tableau Server
  • SAP BW


Tableau Desktop and Server

Make sure that the SAP Logon app is installed and configured on the system. The SAP BW GUI, Logon app, and drivers need to be downloaded from SAP's Software Development Center. If you don't have login credentials, contact your SAP administrator for help getting the driver. The SAP Logon will create the needed connection for Desktop to connect.
For more information


The necessary drivers and programs are not installed on the computer running Tableau Desktop or Tableau Server.
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