[ovirt-users] How to change the CPU of the win10 virtual machine on ovirt-node from 2 cores to 8 cores?

The version of The ovirt-engine is 4.3.5. I created a win10 virtual machine on ovirt-node, which is allocated 8 cores, and when using the virtual machine I found only 2 cores. I used the command "virsh edit win10" on ovirt-node to prepare to modify the CPU core. I was prompted to enter my username and password. I entered the username and password of the ovirt-engine web interface and ssh log in to the ovirt-node username root and password, but both prompt: Error: failed to connect to the hypervisor Error: authentication failed: authentication failed How can this problem be solved?