EMS Access is denied after public folder and arbitration mailboxes

Hi everyone.

I am migrate from Exchange 2010 (2008) to 2013 (2012). I had moved all user mailboxes and i was preparing to decomissioning 2010.

I follow this http://www.petenetlive.com/KB/Article/0000816.htm for last adjustment and migrate Public Folders and Arbitration and Archive mailboxes.

The next day, I try to use the Exchange Management Shell and I receive the following error :

VERBOSE: Connecting to
New-PSSession : [myserver.mydomain] Connecting to remote server failed with the following error message : Access is denied. 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
   New-PSSession : [ ] Connecting to remote server failed with the following error message + FullyQualifiedErrorId : AccessDenied,PSSessionOpenFailed

I follow this steps to fix it, http://www.networksteve.com/exchange/topic.php/Exchange_Management_Shell_fails_to_connect_to_Exchange_Server_20/?TopicId=39825&Posts=2

but problem don't fix and now I get this error:

VERBOSE: Connecting to myserver.mydomain.
New-PSSession : [myserver.mydomain] Connecting to remote server myserver.mydomain failed with the
following error message : The client cannot connect to the destination specified in the request. Verify that the
service on the destination is running and is accepting requests. Consult the logs and documentation for the
WS-Management service running on the destination, most commonly IIS or WinRM. If the destination is the WinRM service,
run the following command on the destination to analyze and configure the WinRM service: "winrm quickconfig". For more
information, see the about_Remote_Troubleshooting Help topic.
At line:1 char:1
+ New-PSSession -ConnectionURI "$connectionUri" -ConfigurationName Microsoft.Excha ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : OpenError: (System.Manageme....RemoteRunspace:RemoteRunspace) [New-PSSession], PSRemotin
   gTransportException
    + FullyQualifiedErrorId : CannotConnect,PSSessionOpenFailed
VERBOSE: Connecting to myserver.mydomain.
New-PSSession : [myserver.mydomain] Connecting to remote server myserver.mydomain failed with the
following error message : The client cannot connect to the destination specified in the request. Verify that the
service on the destination is running and is accepting requests. Consult the logs and documentation for the
WS-Management service running on the destination, most commonly IIS or WinRM. If the destination is the WinRM service,
run the following command on the destination to analyze and configure the WinRM service: "winrm quickconfig". For more
information, see the about_Remote_Troubleshooting Help topic.
At line:1 char:1
+ New-PSSession -ConnectionURI "$connectionUri" -ConfigurationName Microsoft.Excha ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : OpenError: (System.Manageme....RemoteRunspace:RemoteRunspace) [New-PSSession], PSRemotin
   gTransportException
    + FullyQualifiedErrorId : CannotConnect,PSSessionOpenFailed
VERBOSE: Connecting to oldmx.mydomain
VERBOSE: Connected to oldserver.mydomain.
[PS] C:\Windows\system32>

Is there any reason for have this problems after migrate Arbitration? And/Or Public folders?

Please help!!!

Thank you!