The account is visible, but the report cannot be opened
A support engineer has Reader on a resource group and signs in with Microsoft Entra credentials. The storage account is visible in the portal, but reading a blob is denied. The engineer needs read-only access to the reports container. Network connectivity has already been verified, and there is no applicable deny assignment.
Your administration taskIdentify the missing permission and its narrowest useful scope. Do not grant subscription-wide access or use an account key.
Review the solution: identity and storage
A reasoned approach. Reader allows management-plane visibility, not blob data access. Assign Storage Blob Data Reader to the engineer or an appropriate group at the reports container scope. The existing Reader role supplies portal navigation. Check the active identity and allow role propagation before retesting with Entra authentication.
Why the shortcut fails. Storage Blob Data Contributor includes write capability the requirement does not need. Owner or a shared account key would broaden access and hide the distinction between managing an account and reading its data.
Check your work. Explain why a report download should succeed while an upload and access to another container should still fail. Record the role, container scope and authentication method; never record a token or key.