Microsoft azure:无法将34 MB文件上载到blob

我试图将一个34 MB的文件上载到blob,但它提示我一些错误

    XML Parsing Error: no element found
Location: http://127.0.0.1:83/Default.aspx
Line Number 1, Column 1:

我该怎么办…怎么解决

我可以上传500KB大小的小文件。但是我有一个34MB的文件要上传到我的blob容器中

我试过用

protected void ButUpload_click(object sender, EventArgs e)
        {
            // store upladed file as a blob storage
            if (uplFileUpload.HasFile)
            {
                name = uplFileUpload.FileName;
                // get refernce to the cloud blob container
                CloudBlobContainer blobContainer = cloudBlobClient.GetContainerReference("documents");

                // set the name for the uploading files
                string UploadDocName = name;

                // get the blob reference and set the metadata properties
                CloudBlob blob = blobContainer.GetBlobReference(UploadDocName);
                blob.Metadata["FILETYPE"] = "text";
                blob.Properties.ContentType = uplFileUpload.PostedFile.ContentType;

                // upload the blob to the storage
                blob.UploadFromStream(uplFileUpload.FileContent);

            }
        } 

但我无法上传。有人能告诉我怎么做吗…