New-PSSession fails for Skype for Business

I am trying to create a remot session to my Skye for Business server using New-PSSession.  I get this error:

New-PSSession : [mysfbserver] Connecting to remote server mysfbserver failed with the following error message : The WinRM client cannot process the request. The authentication mechanism requested by the client is not supported by the server or unencrypted traffic is disabled in the service configuration. Verify the unencrypted traffic setting in the service configuration or specify one of the authentication mechanisms supported by the server.  To use Kerberos, specify the computer name as the remote destination. Also verify that the client computer and the destination computer are joined to a domain. To use Basic, specify the computer name as the remote destination, specify Basic authentication and provide user name and password. Possible authentication mechanisms reported by server:     Negotiate For more information, see the about_Remote_Troubleshooting Help topic.

Can anyone help please?  I am running PowerShell as a domain admin account which works on the server.


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