Write to Blob Storage from Powerapp error

Question

Write to Blob Storage from Powerapp error

Item Hub Operations 0

Trying to set up Power App that will upload image to Blob Storage on a new Azure Subscription.

Connection is successful but when I add the following to the start of my On Select for the button

Set(AzureBlobIDVar,AzureBlobStorage.CreateFile("primaryimages",AddMediaButton1.FileName,AddMediaButton1.Media).FileLocator);

I get error message

AzureBlobStorage.CreateFile failed: ("status": 400, "message": "Microsoft Entra ID authentication requires the storage account name to be non-empty. This authentication type only supports operations that take the storage account name as a required parameter.\rinclientRequestld: xxxxxx", "error": ("message": "Microsoft Entra ID authentication requires the storage account name to be non-empty. This authentication type only supports operations that take...

Not sure what else I need to do here

Thank in advance

Todd

Vinod Kumar Reddy Chilupuri 2,955 Reputation points Microsoft External Staff

2025-03-11T11:40:10.6+00:00
Hi Item Hub Operations,

The error message you're encountering indicates that the Azure Blob Storage connection requires the storage account name to be specified when using Microsoft Entra ID authentication. This means that you need to ensure that the storage account name is provided correctly in your Power App when attempting to create a file in Blob Storage.

Set(AzureBlobIDVar, AzureBlobStorage.CreateFile("yourStorageAccountName", "primaryimages", AddMediaButton1.FileName, AddMediaButton1.Media).FileLocator);

Make sure that the storage account name is included in your connection settings. Check that the storage account name is not empty in the parameters you are passing to the AzureBlobStorage.CreateFile function. After confirming that the storage account name is correctly specified, attempt to run your Power App again.
https://learn.microsoft.com/en-us/azure/storage/blobs/authorize-access-azure-active-directory

Hope the above suggestion helps! Please let us know do you have any further queries.

Please do consider to “up-vote” wherever the information provided helps you, this can be beneficial to other community members.

1 answer

Your answer

Vinod Kumar Reddy Chilupuri 2,955 Reputation points Microsoft External Staff

2025-03-11T11:40:10.6+00:00

Hi Item Hub Operations,

The error message you're encountering indicates that the Azure Blob Storage connection requires the storage account name to be specified when using Microsoft Entra ID authentication. This means that you need to ensure that the storage account name is provided correctly in your Power App when attempting to create a file in Blob Storage.

Set(AzureBlobIDVar, AzureBlobStorage.CreateFile("yourStorageAccountName", "primaryimages", AddMediaButton1.FileName, AddMediaButton1.Media).FileLocator);

Make sure that the storage account name is included in your connection settings. Check that the storage account name is not empty in the parameters you are passing to the AzureBlobStorage.CreateFile function. After confirming that the storage account name is correctly specified, attempt to run your Power App again.
https://learn.microsoft.com/en-us/azure/storage/blobs/authorize-access-azure-active-directory

Hope the above suggestion helps! Please let us know do you have any further queries.

Please do consider to “up-vote” wherever the information provided helps you, this can be beneficial to other community members.

Answer 1

Item Hub Operations 0

Thanks for your response. By converting the function to CreateFilev2 there was no red squiggly lines.

Now getting Error Message

AzureBlobStorage.CreateFileV2 failed: ("status": 403, "message": "AuthorizationPermissionMismatch\r\nclientRequestld: xxxx", "error": ( "message": "AuthorizationPermissionMismatch" ), "source": "azureblob-ae.azconn-ae-001.p.azurewebsites.net" )

Vinod Kumar Reddy Chilupuri 2,955 Reputation points Microsoft External Staff

2025-03-12T10:21:54.0433333+00:00
Hi Item Hub Operations,

The AuthorizationPermissionMismatch error indicates that the user or application does not have the necessary permissions to perform the operation.

Check Role Assignments that the user or application has the appropriate role assignments in Azure. The roles required for uploading files to Blob Storage are:

Storage Blob Data Contributor

Storage Blob Data Owner

You can assign these roles in the Azure portal by navigating to your storage account, selecting "Access control (IAM)," and adding the necessary role assignments.

Verify Authentication that the authentication method being used (Microsoft Entra ID) is correctly configured and that the user or application has the necessary permissions. If you are using a service principal, make sure it has the required roles assigned.

Ensure that you are providing the storage account name in your CreateFileV2 function call. The storage account name is a required parameter for operations that use Microsoft Entra ID authentication.

If you have already converted your function to CreateFileV2 and are still facing issues, double-check that the storage account name is being correctly passed in the parameters of the function.

https://learn.microsoft.com/en-us/azure/connectors/connectors-create-api-azureblobstorage?tabs=consumption#troubleshoot-problems-with-accessing-storage-accounts
https://learn.microsoft.com/en-us/azure/storage/blobs/assign-azure-role-data-access?tabs=portal

Hope the above suggestion helps! Please let us know do you have any further queries.
Item Hub Operations 0 Reputation points

2025-03-12T10:44:00.2633333+00:00
Thanks for your response.

I have been reading up on Managed Identity's and it would appear this is the way to go.

Ive been trying to follow along the article but have 2 questions.

Can yiou create a Container Group without using the CLI?

What OS type would one use?
Vinod Kumar Reddy Chilupuri 2,955 Reputation points Microsoft External Staff

2025-03-12T11:15:26.29+00:00
Hi Item Hub Operations,

Yes, you can create a Container Group without using the CLI by utilizing the Azure Portal or Azure Resource Manager templates. For OS types, Azure Container Instances support both Linux and Windows containers, but multi-container groups currently only support Linux containers. Creating a Container Group Without CLI

Azure Portal: You can create a Container Group directly through the Azure Portal by navigating to the Container Instances service and following the prompts to configure your container settings.

Azure Resource Manager (ARM) Templates: Another method is to use ARM templates, which allow you to define the infrastructure as code and deploy it without using the CLI.

Regarding the OS type for a Container Group, you can specify the OS type based on the operating system your containers require. The available options are:

Linux: Choose Linux if your containers are designed to run on a Linux-based environment.

Windows: Choose Windows if your containers require a Windows-based environment.

When defining the Container Group configuration in the Azure Resource Manager template, you can specify the osType property to indicate whether the Container Group should run on Linux or Windows. Ensure that you select the appropriate OS type based on the operating system compatibility of your containerized applications.
https://learn.microsoft.com/en-us/azure/container-instances/container-instances-overview

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Write to Blob Storage from Powerapp error

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