Ensure that Virtual Machine Manager has the appropriate rights to perform this action. Also, verify that CredSSP authentication ...

Ensure that Virtual Machine Manager has the appropriate rights to perform this action. 

Also, verify that CredSSP authentication is currently enabled on the service configuration of the target computer %ServerName;. To enable the CredSSP on the service configuration of the target computer, run the following command from an elevated command line: winrm set winrm/config/service/auth @{CredSSP="true"}