Hi guy's,
since the new Azure backup agent with vault authentication I'm facing the agent error 100052 (http://social.technet.microsoft.com/wiki/contents/articles/10183.azure-backup-errors-and-events-portal.aspx). The service is running and the specified port is also open. My firewall/antivirus is causing this trouble. Now I'm wondering how I could resolve this issue by changing some parameters to enable the missing communication. Seems to be internal only (netmon & fiddler do not monitor any outgoing activity).