Why is it that some workbooks show thumbnails and others don't? All these workbooks are duplicates of each other, therefore containing the same data sources etc. See Attached -

A few possible solutions for you:

https://community.tableau.com/s/question/0D54T00000C62skSAB/published-workbooks-thumbnails-are-blank

https://kb.tableau.com/articles/issue/workbook-with-user-filters-are-displayed-with-a-generic-image-when-published-to-ta…

Best, Don

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