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


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

Issue

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

Environment

  • Tableau Server 
  • Proxy server

Resolution

Work with your local IT department to resolve connectivity issue.

Cause

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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