Download file blob: Proxy Error (The request was rejected by the HTTP filter. Contact your Forefront TMG administrator.)

Question

Hi all,

I am encountering a strange problem. I am downloading file from Azure blob storage using code as below:

 CloudBlobContainer container = AzureAccountManagement.currentBlobClient.GetContainerReference(containerName);
            CloudBlob blob = container.GetBlobReference(blobName);
            
            BlobRequestOptions options = new BlobRequestOptions();
            options.Timeout = new TimeSpan(0, TiMEOUT, 0);

            try
            {
                blob.DownloadToFile(localPath, blob.Name), options);
            }

In AzureAccountManagement above, I have configurated correct connection string.

Using code above, when I am downloading a file with .mdb extension, I will get a exception as below:

--------------------------------------------------------------------------------

Microsoft.WindowsAzure.StorageClient.StorageServerException was caught

  Message=Proxy Error ( The request was rejected by the HTTP filter. Contact your Forefront TMG administrator.  )

InnerException:

"The remote server returned an error: (502) Bad Gateway."

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Other trying:

1. When I attempt to download other files(.xml/html/txt), the code successfully download them.

2. I used Azure Storage Explorer to download them, .mdb file --failed with the same error; other file types, successful.

3. I tested on other machines, actually the same configuration as my machine, it successfully download both .mdb file and other file types.

So I think there are some HTTP filter or security problems with my machine, but I don't know how to figure it out. Do you guys have encountered similar issues? If yes, I hope to get solutions from you.

My working machine is Windows 7/64-bit/VS 2010 SP1/Azure SDK 1.6. if the information is useful.

Answer 1

Hi,

I think this issue was caused by the Forefront TMG, would you like to contact the Forefront TMG administrator to see if this machine has rejected .mdb file? It seems that I can not reproduce your issue at my side.

If you contact your Forefront TMG administrator and find nothing special, please inform me, thanks.

BR,

Arwind

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Answer 2

Hi Paul - like Arwind said, this is likely an issue with your local network firewall.  I'd contact your Forefront administrator for help with this.  Thanks!

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-Jeff