Hi, We’re seeing the same issue on several queue based ingestion jobs failing a couple hundreds of tasks. It was intermittent yesterday (10 Sep 2025) as in a few random tasks would fail in each run but the issue has now spread out to all tasks failing all of them at all runs. I’ve given the service principal all the roles suggested above but to no avail. I suspect it could have to do with a change in the Azure Event Grid response structure.