Estoy atascado con este errorThe specified container does not exist.

Dejame explicar,

CloudBlobClient blobStorage = GetBlobStorage("upload");
CloudBlockBlob blob = BlobPropertySetting(blobStorage, Guid.NewGuid().ToString().ToLower() + Path.GetExtension(file.FileName));
blob.UploadFromStream(file.InputStream);

public static CloudBlobClient GetBlobStorage(string cloudBlobContainserName)
    {
        CloudBlobClient blobStorage;
        try
        {
            var storageAccount = CloudStorageAccount.FromConfigurationSetting("StorageConnectionString");
            blobStorage = storageAccount.CreateCloudBlobClient();
            CloudBlobContainer container = blobStorage.GetContainerReference(cloudBlobContainserName); 
            container.CreateIfNotExist();
            var permissions = container.GetPermissions();
            permissions.PublicAccess = BlobContainerPublicAccessType.Container;
            container.SetPermissions(permissions);
        }
        catch (Exception ex)
        {
            Logger.LogError(Log4NetLogger.Category.Exception, "Error in : BlobHandler.GetBlobStorage :>> Exception message: " + ex.Message);
            throw;
        }
        return blobStorage;
    }
    public static CloudBlockBlob BlobPropertySetting(CloudBlobClient cloudBlobClientReferenceName, string blobContentName)
    {
        CloudBlockBlob blob = cloudBlobClientReferenceName.GetBlockBlobReference(blobContentName);


        return blob;
    }

y miStorageConnectionString es

      <Setting name="StorageConnectionString" value="DefaultEndpointsProtocol=https;AccountName=duw;AccountKey=bla bla" />

el contenedor 'upload' y la cuenta de almacenamiento 'duw' existen.

ejecutandoblob.UploadFromStream(file.InputStream); declaración causa el error.

traza de pila

en Microsoft.WindowsAzure.StorageClient.Tasks.Task1.get_Result() at Microsoft.WindowsAzure.StorageClient.Tasks.Task1.ExecuteAndWait () en Microsoft.WindowsAzure.StorageClient.TaskImplHelper.ExecuteImpl (Func`1 impl) en Microsoft.WindowsAzure.StorageClalle.Cloud.P.P.P.P.P.P.A.A. fuente) en DAL.Handlers.BlobHandler.CreateAd (archivo HttpPostedFileBase, modelo de anuncio) en D: \ DU Server \ trunk \ Du Server \ DAL \ Handlers \ BlobHandler.cs: línea 151

excepción interna

{"The remote server returned an error: (404) Not Found."}

¿Puede algún cuerpo ayudarme a resolver esto?