CredSSP authentication is currently disabled on the local client. You must be running with administrator privileges in order to enable CredSSP
GPEDIT (as administrator)
Local Computer Policy > Computer Configuration > Administrative Templates > System > Credentials Delegation:
Set: "Enabled" and "Add servers to the list"
Show: enter "WSMAN/*" as Value
Fire up Hyper-V Manager and connect to server only with IP-address and enter as user "[IP Address]\[username]” and set the password.
On Win2016 desktop CLIENT
PS C:\Users\Administrator>start-service winrm PS C:\Users\Administrator>Enable-WSManCredSSP -Role client -DelegateComputer * PS C:\Users\Administrator>stop-service winrm
Allow delegating fresh credentials with NTLM-only server authentication