Description of problem: i am trying deploy oVirt4.3 for windows guest vm. and entercountered the same problem as: https://bugzilla.redhat.com/show_bug.cgi?id=1940707. so, i checked this solution https://access.redhat.com/solutions/5893381,while it's weird that no solutions on the solution page. and , it is said that another weird thing, ovirt 4.4 will remove SSO support, anyway, i just need find a workaround for this. thanks to google, i found an ovirtcredprov.dll works for the windows sso,but, the sso only works when the vm startup, does NOT work when the windows locked/signout. so i checked the vdsm log, vdsm just didn't send desktopLogin command to OGA when i unlock or sign in after locked/signout. May I know how could i force VDSM to send desktopLogin command ONCE connect the windows VM console but not just when i power on the vm? and, one more thing, i don't know if below failed results in this problem(but the sso works when poweron the vm),as below vdsm log when i poweron windows vm. 2021-09-15 16:17:08,766+0800 INFO (jsonrpc/6) [api.virt] START desktopLogin(domain=u'LIDC.LE', username=u'chris', password='********') from=::ffff:192.168.18.42,47756, flow_id=0e204198-ddee-4dfb-9223-5789b05fc699, vmId=719047ed-1a5b-4948-875c-ef1014df392e (api:48) 2021-09-15 16:17:08,766+0800 INFO (jsonrpc/6) [api.virt] FINISH desktopLogin return={'status': {'message': 'Guest agent non-responsive', 'code': 19}} from=::ffff:192.168.18.42,47756, flow_id=0e204198-ddee-4dfb-9223-5789b05fc699, vmId=719047ed-1a5b-4948-875c-ef1014df392e (api:54) 2021-09-15 16:17:08,767+0800 INFO (jsonrpc/6) [jsonrpc.JsonRpcServer] RPC call VM.desktopLogin failed (error 19) in 0.00 seconds (__init__:312) 2021-09-15 16:17:09,875+0800 WARN (qgapoller/1) [virt.periodic.VmDispatcher] could not run <function <lambda> at 0x7faf604b46e0> on ['719047ed-1a5b-4948-875c-ef1014df392e'] (periodic:289)