IssueWhen viewing a workbook that uses a published data source the following error appears:
Internet communication error, server returned nothing (no headers, no data) (localhost).
In some cases (localhost) will not be displayed and instead may show one the computer names in the Tableau Server cluster.
The following can also be found in the dataserver logs:
"ERROR com.tableausoftware.controller.dataserver.DataServerSessionService - Error response. code:401 type:DataServerNoAuth msg:No Tableau Server user found."