On Tableau Server or Tableau Cloud, when attempting to run an extract refresh task for a workbook that connects to a separately published data source such as Snowflake, the refresh job may fail intermittently with an "Expired" status or the following error, even though the credentials or authentication tokens are still valid:
com.tableausoftware.nativeapi.exceptions.FederatedDataSourceException: Unable to connect to published data source to refresh data. Please publish your workbook with “Allow refresh access” selected.No Tableau Server user found.DataServiceFailure
This issue occurs when data source credentials are not properly embedded in the workbook during publishing or web authoring, or when credentials are cleared due to actions such as changing content ownership.
To resolve this issue, re-embed the credentials into the workbook by republishing it or using Web Authoring.
Best Practice: As a best practice to avoid credential issues at the workbook level, consider configuring the extract refresh schedule directly on the published data source rather than within the workbook. Workbooks can then connect to this published data source via a live connection.
[Actions that Unexpectedly Remove Embedded Data Source Credentials in Tableau Cloud or Tableau Server and How to Avoid]
https://help.salesforce.com/s/articleView?id=005321559&type=1
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