You use a COBOL Application debug configuration to debug projects developed on a remote UNIX machine. Before you can debug the remote application, you need to have an X window implementation installed and running, so that the output of a remote application running on a UNIX machine can be viewed on your local machine. You do not need X window for other debug configuration types.
Windows:
Micro Focus ViewNow X is provided as part of Visual COBOL. See Installing X Windows on Windows in the Installation section. Find the ViewNow X documentation on the Micro Focus Infocenter.
Specify the details about the display that the X11 server tries to contact in the IDE preferences as follows:
The default Default X Server (DISPLAY) value is clientMachineName:0.0.