InvalidHttpRequestToLivy: from cannot be less than 0 HTTP status code: 400

Hi zakeer1517,

Thank you for reaching out to the Microsoft Fabric Community, and thanks to Vinodh247, shared valuable inputs on this thread. The solution provided by the super user is correct and aligns well with the issue you are described.

Based on your detailed analysis and the consistent failure pattern, this does appear to be related to a possible Livy API limitation or bug, particularly given the error:
InvalidHttpRequestToLivy: from cannot be less than 0.

Since you've already tried increasing the session timeout and scaling up the capacity without success, I recommend raising a Microsoft Fabric support ticket. This will allow the engineering team to further investigate the backend Livy logs and session handling in detail. You can create a Microsoft support ticket using the link below: https://learn.microsoft.com/en-us/power-bi/support/create-support-ticket

In the meantime, consider reducing the concurrency level or breaking the workload into smaller DAG batches as a temporary workaround to help avoid the failure.

If this post helps, then please give us ‘Kudos’ and consider Accept it as a solution to help the other members find it more quickly.

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