[ovirt-users] Windows 7 Error writing credentials to pipe [1/3] (error = 2)

Hi i am evaluating ovirt 4.3 when i log in on the VM portal i can use a AD user when i click on a windows 7 64 bit machine console (SPICE) i get Dummy-2::INFO::2019-06-18 12:01:01,107::OVirtAgentLogic::322::root::Received an external command: login... Dummy-2::ERROR::2019-06-18 12:01:02,111::GuestAgentWin32::326::root::Error writing credentials to pipe [1/3] (error = 2) Dummy-2::ERROR::2019-06-18 12:01:03,104::GuestAgentWin32::326::root::Error writing credentials to pipe [2/3] (error = 2) Dummy-2::ERROR::2019-06-18 12:01:04,096::GuestAgentWin32::326::root::Error writing credentials to pipe [3/3] (error = 2) in the ovirt-guest-agent.log so Single Sign On does not work Can you help me because i am quite new at this rgds Harry