Troubleshoot storage-related errors when importing updates in Device Update for IoT Hub

When importing an update to Device Update for IoT Hub, you may see this error:

“The permissions on this storage container prevent access to your files. Add the Storage Blob Data Contributor role to your user account. Learn more.”

To resolve the error, follow these steps:

1. In the Azure portal, search for the "Storage accounts" service in the search bar at the top of the page. Select the "Storage accounts" service.

2. In the Storage accounts view, locate the Storage account that you’re using with Device Update for IoT Hub. Select that account.

3. In the selected Storage account, select the "Containers" option under the "Data storage" header. Locate the container that you’re using with Device Update for IoT Hub. Select that container.

4. In the Container view, select "Access Control (IAM)" from the left-hand navigation menu. Select "Add" -> "Add role assignment" from the top menu.

5. In the Role tab, search for the "Storage Blob Data Contributor" role and select it, then select the "Next" button.

6. In the Members tab, keep the default selection of "User, group or service principal" and select the "Select members" link. In the right-hand flyout menu, search for your user account, select it, and choose the "Select" button. Then select the "Next" button.

7. In the Conditions tab, make no changes and select the "Next" button.

8. In the Review + assign tab, select the "Review + assign" button.

After completing these steps, wait a few minutes for the change to propagate, and then try the Device Update for IoT Hub import experience again from the beginning.