Error "Server name cannot be determined" Connecting to SQL Server From Tableau Desktop

Published: 31 Mar 2016
Last Modified Date: 06 Oct 2017


When attempting to connect to a SQL data source in Tableau Desktop, the following error occurs:

[Microsoft][SQL Server Native Client 10.0][SQL Server] Server name cannot be determined. It must appear as the first segment of the server's dns name ( Some libraries do not send the server name, in which case the server name must be included as part of the user name (username@servername). In addition, if both formats are used, the server names must match.


  • Tableau Desktop
  • Windows 8
  • MS SQL Server


Log in using username@servername rather than simply username.


The database is configured to require the format username@servername when logging in. 
This behavior is due to the database configuration and not specific to Tableau Desktop.
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