Winscp Level is: WinSCP Version 5.11.3 (Build 7995) (OS 6.1.7601 Service Pack 1
Windows Client is: Windows 7 Enterprise
z/VM-Level is: z/VM Version 6 Release 4.0, service level 0000 (64-bit)
Connect with a Unsecured Connection runs without Problems with Standard-Port 21 21.
SSL Connection goes over Ports 990/991 in Passive Mode (Ports 980 to 989).
In the attachment is the Winscp.log-output.
Can anybody check and solve the reason ?