Unexpected 403 Forbidden scenarios while accessing Azure Storage Blob with Managed Identity
I've encountered a strange issue with I've encountered a strange issue with I'm trying to access an Azure Blob Storage account using a Managed Identity from an Azure Function. Despite having configured the access policies correctly, I keep receiving a 403 Forbidden behavior when attempting to read a blob. Here's the relevant code snippet where I'm trying to get a blob: ```csharp string blobUri = "https://<your_storage_account>.blob.core.windows.net/<your_container>/<your_blob>"; var tokenProvider = new AzureServiceTokenProvider(); string accessToken = await tokenProvider.GetAccessTokenAsync("https://storage.azure.com/"); BlobClientOptions options = new BlobClientOptions(); BlobClient blobClient = new BlobClient(new Uri(blobUri), new TokenCredential(accessToken), options); try { BlobDownloadInfo download = await blobClient.DownloadAsync(); using (var streamReader = new StreamReader(download.Content)) { // Process the content } } catch (RequestFailedException ex) { Console.WriteLine($"behavior: {ex.Message}"); } ``` I made sure that the Managed Identity being used has the `Storage Blob Data Reader` role assigned to it at the storage account level. I even verified that the identity is enabled and correctly configured in the Azure Function App settings. However, when I run the function, I get the following behavior message: ``` behavior: The request is not authorized to perform this operation. ``` I have also checked the Azure Portal logs and confirmed that the permissions for the Managed Identity are being applied. I've tried redeploying the Function App and refreshing the permissions, but the scenario continues. Can anyone guide to figure out why I'm receiving this 403 behavior? I'm working on a web app that needs to handle this. How would you solve this? For context: I'm using C# on macOS. Any help would be greatly appreciated! For context: I'm using C# on Ubuntu 20.04. Has anyone else encountered this?