Error "TableauException: HTTP 401: Unauthorized Cache-Control" Accessing Published Workbooks

Published: 17 Dec 2014
Last Modified Date: 28 Jun 2016


When accessing published workbooks, the following error might occur:  
TableauException: HTTP 401: HTTP/1.1 401 Unauthorized Cache-Control


  • Tableau Server 
  • Proxy server


Work with your local IT department to resolve connectivity issue.


Typically this error occurs when the proxy server does not allow host names/FQDN to pass through; and this blocks communication with Tableau Server. 

Additional Information

While this error looks like a Tableau Server error, it was actually a proxy error sent in HTML from the proxy server. Tableau Server wraps the HTML in a 'Tableau Exception' because the error cannot be interpreted.
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