What causes UserErrorAzureBlobOperationFailed?

The service principal or managed identity is missing 'Storage Blob Data Reader' or 'Storage Blob Data Contributor' RBAC role on the storage account. The storage account firewall is set to 'Selected networks' and the ADF integration runtime IP is not in the allowlist. The SAS token in the linked service has expired. The target blob container or folder path does not exist

How do I fix UserErrorAzureBlobOperationFailed?

Assign the correct RBAC role to the service principal or managed identity at the storage account or container scope.. If using a storage account firewall, add the ADF integration runtime IP addresses or enable 'Allow trusted Microsoft services'.. If using SAS tokens, regenerate the token and update the linked service.. Confirm the container and folder path exist in the storage account.. Test the linked service connection in the ADF authoring UI to confirm basic connectivity.

High severitydata source

Power BI Refresh Error:
UserErrorAzureBlobOperationFailed

What does this error mean?

An Azure Data Factory copy or data flow activity failed while reading from or writing to Azure Blob Storage. This indicates a permission problem or a storage account firewall blocking the integration runtime.

Common causes

1The service principal or managed identity is missing 'Storage Blob Data Reader' or 'Storage Blob Data Contributor' RBAC role on the storage account
2The storage account firewall is set to 'Selected networks' and the ADF integration runtime IP is not in the allowlist
3The SAS token in the linked service has expired
4The target blob container or folder path does not exist

How to fix it

1Assign the correct RBAC role to the service principal or managed identity at the storage account or container scope.
2If using a storage account firewall, add the ADF integration runtime IP addresses or enable 'Allow trusted Microsoft services'.
3If using SAS tokens, regenerate the token and update the linked service.
4Confirm the container and folder path exist in the storage account.
5Test the linked service connection in the ADF authoring UI to confirm basic connectivity.

Frequently asked questions

Does this error affect all pipeline runs or just the current one?

Depends on the root cause. A persistent misconfiguration fails every run; a transient issue may resolve on retry. Check the run history.

Can this error appear in Azure Data Factory and Microsoft Fabric pipelines?

Yes — the same connector errors appear in both ADF and Fabric Data Factory pipelines.

How do I see the full error detail for an ADF pipeline failure?

In ADF Monitor, click the failed run, then the failed activity. The detail pane shows the error code, message, and sub-error codes.

Will downstream Power BI datasets be affected when an ADF pipeline fails?

Yes — a dataset refreshing after the pipeline will use stale data or fail if the target table was cleared. The Power BI refresh may succeed while serving wrong data.

Official documentation: https://learn.microsoft.com/en-us/azure/data-factory/connector-troubleshoot-azure-blob-storage