Set the DefaultServiceVersion property of Azure blob storage.

DefaultServiceVersion.cs

var account = CloudStorageAccount.FromConfigurationSetting("DataConnectionString");
var blobs = account.CreateCloudBlobClient();
var existingprops = blobs.GetServiceProperties();
blobs.SetServiceProperties(new Microsoft.WindowsAzure.StorageClient.Protocol.ServiceProperties()
            {
                DefaultServiceVersion = "2011-08-18",
               Logging=existingprops.Logging,
               Metrics=existingprops.Metrics,
            });