Hello Michal, this is the problem, it does not work in the UI with noVNC or the downloadable VNC config as stated. I do not tried it directly to the host, I used the oVirt functions.     Gesendet: Sonntag, 08. Januar 2017 um 13:49 Uhr Von: "Michal Skrivanek" <mskrivan(a)redhat.com&gt; An: "Matthias Müller" <matthiasmueller07(a)web.de&gt; Cc: "users@ovirt.org" <users(a)ovirt.org&gt; Betreff: Re: [ovirt-users] oVirt VNC issue     On 05 Jan 2017, at 10:31, Matthias Müller <matthiasmueller07@web.de[mailto:matthiasmueller07@web.de]> wrote:   Hello oVirt users,   I am evaluating oVirt at the moment and have an issue with the VNC access of the VMs. Direct console access (with Realvnc viewer) and noVNC is not possible. The window is closed directly or for noVNC only the message "Loading" is shown.   oVirt 4 was installed on CentOS 7.3,  engine and node on different machines. I now installed oVirt 3.6 with the all in one option on one CentOS 7.3 x64 and have the same issue. I also checked, if the VM is running in KVM with virsh command, if all ports are open (5900, 6100) and responding, the CA certificate is installed and the services are running. When I try to connect with Realvnc viewer a password is requested, if I state a wrong one a message is shown, that the access was wrong, if I enter the correct, the window is closed.   Do you have any ideas, why it is not working?  Yes, you can't access it directly bypassing the security layer added by oVirt. Use rest api to get the connection info with temporary access ticket. Or open console from UI     Thanks   _______________________________________________ Users mailing list Users@ovirt.org[mailto:Users@ovirt.org] http://lists.ovirt.org/mailman/listinfo/users