Thanks Michal, I get messages on oVirt Client from address "*.*.*.*" is using version 3 of the API, which has been deprecated since version 4.0 of the engine, and will no longer be supported starting with version 4.4. Make sure to update that client to use a supported versions of the API and the SDKs, before upgrading to version 4.4 of the engine. I know virt-viewer on RHEL 6 stopped working completely. Regards, Paul S. ________________________________________ From: Michal Skrivanek <michal.skrivanek(a)redhat.com&gt; Sent: 06 March 2019 09:48 To: Staniforth, Paul Cc: users(a)ovirt.org Subject: Re: [ovirt-users] virt-viewer centos7.6 That’s a CentOS question really. But apparently not. Any specific issue you’re trying to fix? Thanks, michal To view the terms under which this email is distributed, please go to:- http://leedsbeckett.ac.uk/disclaimer/email/