I have installed the AS ABAP 7.52 SP04, Dev Edition according to the instructions. After a successful installation I tried to connect via the SAP GUI. Afterwards I always get the following error message: Connection to partner 127.0.0.1:3200 broken. Return Code: -6, Error No: 10054, Error Text: WSACONNRESET: Connection Reset by Peer.

The Port Forwardings in VirtualBox are working and I can ping the virtual machine (OpenSUSE).

Do someone know the problem?