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Medium severityresource

Power BI Refresh Error:
TASK_NOT_FOUND

What does this error mean?

Tableau Cloud returned error 404026 (TASK_NOT_FOUND) — not found. The requested resource could not be located on the server.

Common causes

  • 1The task not found referenced in the request does not exist in Tableau Cloud.
  • 2The ID or LUID supplied in the request is incorrect or belongs to a deleted resource.
  • 3The resource was recently deleted or has not yet been created.

How to fix it

  1. 1Verify that the resource ID or LUID in your API request is correct.
  2. 2Use the corresponding List API endpoint to confirm the resource exists before referencing it.
  3. 3Check whether the resource was recently deleted in Tableau Cloud admin settings.

Frequently asked questions

What does Tableau error 404026 (TASK_NOT_FOUND) mean?

It means not found — the requested resource could not be located on the server.

How do I find the resource ID causing this error?

Use the corresponding Tableau REST API List endpoint (e.g. GET /sites/{siteId}/users) to retrieve valid IDs before passing them in update or delete requests.

Source · help.tableau.com/current/api/rest_api/en-us/REST/rest_api_concepts_errors.htm

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