Error "Unable to connect to Tableau Server ... Internet communication error" When Connecting to Published Data Source

Published: 25 Feb 2014
Last Modified Date: 05 Oct 2018


When connecting to a data source published to Tableau Server, the following error might occur:
Unable to connect to Tableau Server
Cannot connect to Tableau Server. Please check the server name and port and try again.
Internet communication error: Couldn't connect to server (<server name>)

When you try to connect to the same Tableau Server data source from a different computer, you are able to connect successfully.


  • Tableau Server
  • Network Firewall


Work with your IT team to change the firewall rules to grant your computer access to the Tableau Server.


A firewall or directional rule is preventing your computer from connecting to the Tableau Server.
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