Issue
When publishing to Tableau Server, the following error occurs:
Publish failure
workbook thumbnail format is invalid. Must be PNG with resolution of 300*300 or less.
Last Modified Date: 10 Dec 2021
Environment
- Tableau Server
- Windows Server 2012
Resolution
As a Tableau Server Administrator, upgrade Tableau Server to version 2021.4, https://www.tableau.com/support/releases/server/2021.4Cause
This behavior is related to a known issue that has been fixed in the 2021.4 release of Tableau Server.Thank you for providing your feedback on the effectiveness of the article.
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