[ovirt-users] Unable to create VMs under ovirt 4.4

Hello List, after a few Problems with the package "java-client-kubevirt" and some updates Problems on my Hypervisor and my ovirt-engine  i make a totally fresh installation of ovirt 4.4. So, after the new installation i can't create a Linux VM.  I get a message that i don't understand: Feb 13 10:44:12 hypervisor vdsm[6644]: WARN Attempting to add an existing net user: ovirtmgmt/9ab115dd-1c21-476d-955f-d4164e4bc5c7 Feb 13 10:44:14 hypervisor journal[2698]: the CPU is incompatible with host CPU: Host-CPU stellt nicht die erforderlichen Funktionen bereit: hle, rtm Feb 13 10:44:15 hypervisor vdsm[6644]: WARN Attempting to remove a non existing network: ovirtmgmt/9ab115dd-1c21-476d-955f-d4164e4bc5c7 Feb 13 10:44:15 hypervisor vdsm[6644]: WARN Attempting to remove a non existing net user: ovirtmgmt/9ab115dd-1c21-476d-955f-d4164e4bc5c7 So, which function are missing? I don't know what "hle" and "rtm" stands for? And searching with Google get no Results. And it is interesting before the new Installation i was possible to create a Debian and CentOS VM under ovirt 4.4 Regards Dirk