Downloading workbook sheets in .ppt format failed due to an unexpected server error and a network error in the browser.

Published: 22 Jan 2024
Last Modified Date: 29 Jan 2024


Encountering an error during the download of workbook sheets as PowerPoint ppt file. 

Error in Server Log:
com.tableausoftware.model.vizql.session.SessionGoneException: Vizql session gone 34FAC42C63CC4DB0BF92285AEEC86855

Network error in the browser:

User-added image

On the browser's download page, a placeholder file in .txt format is visible, accompanied by an error message stating "Site was not available."


  • Tableau Server


Lowering the VizQL session timeout may cause download failures once the session surpasses the predefined threshold. To address this, increase the VizQL session timeout in alignment with file size and processing time. Utilize the tsm configuration set Options command to adjust the vizqlserver.session.expiry.timeout setting.

The default value is set to 30 minutes. If the server administrator has previously modified it to a lower value, please verify the current setting and adjust it according to your specific requirements.


Unexpected server error occurs due to VizQL session timeout, resulting in an error when the session expires.

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