Refreshing an Extract Causes “Mismatched row counts” Error

Published: 28 Feb 2013
Last Modified Date: 21 Mar 2016


When performing an extract refresh, the refresh fails with the following error:

Tableau Data Engine Error: 4: Scan::Next: Mismatched row counts. The table "[Extract].[Extract]" does not exist. Unable to connect to the server "". Check that the server is running and that you have access privileges to the requested database.


  • Tableau Server 7 and later versions


  1. Recreate the extract in Tableau Desktop.
  2. Publish the new extract to Tableau Server, adding full extract refresh instead of incremental, if applicable.

Additional Information

If you are still using Tableau Server version 7, we recommend upgrading to Tableau 8 or a more recent version.For more information, see Upgrading Tableau Server.
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