Error "Class not registered" Connecting to Microsoft Analysis Services

Published: 30 May 2014
Last Modified Date: 05 Oct 2018


When you try to connect to Microsoft Analysis Services from the 64-bit version of Tableau Desktop on a computer that is a running a 32-bit version of Microsoft Office 2013, the following error might occur:
The drivers necessary to connect to this database are not properly installed.
Database error 0x80040154: Class not registered connecting to Microsoft Analysis Services
Unable to connect to the server. Check that the server is running and that you have access privileges to the requested database.


  • Tableau Desktop 8.1 (64-bit) and later versions
  • Microsoft Analysis Services (MSAS)
  • Microsoft Office 2013 (32-bit)


Use one of the following workarounds.
  • Uninstall the 32-bit version of Microsoft Office 2013 and install the 64-bit version of Office 2013.
  • Uninstall the 32-bit version of Office 2013 and install Office 2010.
  • Uninstall the 64-bit versions of Tableau Desktop and install the 32-bit version of Tableau Desktop.
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