We are attempting to backup an Azure VM file server to the Azure Cloud Backup vault. The amount of data to be backed up is approximately 250 GB. The VM is current with all patches. When starting the back up with the "Back Up Now" menu option in the Windows Azure Backup management consol. The Job Details dialog opens reporting that the service is taking a snapshot of data, then goes to "Estimating size of backup items..." where it dies after about 4 to 6 hours. Repeated attempts result in the same message.
The Windows Azure Backup application has been un-installed and re-installed several times without any reported errors.
The Azure VM and the backup vault are in the East (US) geographic region. The vault and VM have valid certificate installed, the vault reports that the VM is an authenticated server. I have dropped and recreated the vault several times and reinsalled the cert and associated the VM to it.
Any suggestions would be gratefully accepted.
Mark