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Error "Unknown Server Error: TableauException: HTTP 502" Publishing or Working With Published Data Source


Published: 14 Oct 2014
Last Modified Date: 07 Jan 2016

Issue

When publishing or working with a published data source, the following error might occur:

Unknown Server Error: TableauException: HTTP 502

Environment

Tableau Server

Resolution

Work with your IT team to troubleshoot and resolve issues with connectivity through proxy server.

Cause

The error was due to a proxy server denying Tableau Server access to local files. 
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