Cannot connect to Exchange Powershell on one mailbox server, which stops access to ECP

I have 4 exchange 2013 servers.  2 cas and 2 mailboxservers.  When trying to access powershell on the second mailbox server I get the following error.  Also, since I can access the mailbox server I cannot access ECP, but I can access powershell on the other three servers.

Things that I've tried:
Made sure that the Kerbauth.dll is in native mode.
Bindings are correct on web sites

Error Message:

New-PSSession : Servername Connecting to remote server Servername failed with the following error message : The WinRM client cannot process the request. It cannot determine the content type
of the HTTP response from the destination computer. The content type is absent or invalid. For more information, see the about_Remote_Troubleshooting Help topic.
At line:1 char:1
+ New-PSSession -ConnectionURI "$connectionUri" -ConfigurationName Microsoft.Excha ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : OpenError: (System.Manageme....RemoteRunspace:RemoteRunspace) [New-PSSession], PSRemotin
   gTransportException   + FullyQualifiedErrorId : -2144108297,PSSessionOpenFailed

Thanks Diane