> Of course, virt-manager now does not work. It opens but it does > not provide any means of adding a new virtual host. What are the symptoms? Does virt-manager ask for your root password when starting? Did you try with SELinux in permissive mode? I recommend that you install setroubleshoot, it helps to debug SELinux issues, and will be notified when in permissive mode as well: sudo yum install setroubleshoot