No Connection to the Server W2012 R2

Hello,

I have Backup Exec 15 on a W2012R2 server (german). I connected to a W2003 Server and W2008R2 server and Backup works.

I try to connect to a new W2012R2 Microsoft Server, BE installs the Client on the remote sever and the BE Agent Utility looks ok on the remote server (security shows the Backup server and the expiration date 2016.)

When I try to connect it does not work. Also when I try to use the right mouse key to connect manually or do the "Test connection" it says "Identificatindata could not be testet" (but the Agent installation worked!?!). Both Servers are german.

Firewall is off. Any idea? Thanks