Cant send content to Cloud Management Gateway

Hello,

I am facing to an issue with my CMG, i am in CM 2103 and i use CMG to manage my internet client

When i want to distrubute content to CMG i have these error from PkgXferMgr log file :

WARNING: Exception occurred accessing storage; StorageException error = ():The underlying connection was closed: An unexpected error occurred on a send.

WARNING: Caught exception Microsoft.WindowsAzure.Storage.StorageException - The underlying connection was closed: An unexpected error occurred on a send.

UploadPackageToCloudWithContentInfo() failed. Error = 0x80131500

have any one any idea for the reason to these problem and how i can resolve it ?

Best regards,