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Tableau Server Hosted on AWS Error: "Unknown Server Error" or "Unexpected Server Error" When Accessing a Workbook

Publiceringsdatum: May 5, 2026
Beskrivning
When accessing a workbook on Tableau Server hosted on AWS, the workbook fails to load and the following error messages might occur: 
Unknown Server Error
'An unexpected error occurred. If you continue to receive this error please contact your Tableau Server Administrator.'
Or
Unexpected Server Error
'An error occurred communicating with the server (504). This may be a temporary network condition. Please retry the operation. If this condition persists, contact your system administrator.'

Cause

The connection to AWS times out due to timeout settings in the elastic load balancer. 
Lösning

To stop the failures "Unknown Server Error" or "Unexpected Server Error" when Tableau is hosted on AWS, increase the idle timeout on the AWS elastic load balancer. The default value is 60 seconds which can be increased up to 3600 seconds (1 hour).

Ytterligare resurser
For more information about idle connection timeout, see Configure the Idle Connection Timeout for Your Classic Load Balancer.


 
Knowledge-artikelnummer

001473070

 
Laddar
Salesforce Help | Article