If you launch the console of a virtual machine in Oracle VM Manager, and an error is displayed, you may not have installed the VNC viewer on the Oracle VM Manager host computer. To resolve this problem, install a VNC viewer on the Oracle VM Manager host. See Installing and Configuring a VNC Viewer for more information.

You can also install a VNC viewer on the client accessing the Oracle VM Manager UI. Oracle recommends you also install a VNC viewer on the Oracle VM Manager host computer so that if a client does not have a VNC viewer, this problem does not occur.