The WinRM client cannot process the request as the server identity could not be verified. If the identity of the server is ...

The WinRM client cannot process the request as the server identity could not be verified. If the identity of the server is trusted, add it to the TrustedHosts list and retry the request.
Use winrm.cmd to configure TrustedHosts. Note that computers in the TrustedHosts list might not be authenticated.
For more information on how to set TrustedHosts, run the following command: winrm help config