Exchange 2010: Unable to open Exchange Management Console – Initialization Failed

Message:
The attempt to connect to http://exchange.contoso.com’/powershell using ‘Kerberosauthentication failed: Connecting to the remote server failed with the following error message : WinRM cannot process the request…

#1
Close EMC. Open regedit and delete ‘NodeStructureSetting’  from registry: HKEY_CURRENT_USER\SOFTWARE\Microsoft\ExchangeServer\v14\AdminTools.

#2
Make sure that the Kerbauth module (C:\Program Files\Microsoft\Exchange Server\v14\Bin\kerbauth.dll) is not enabled on the default website but is, instead, enabled only for the PowerShell virtual directory.
AND
Make sure that the WSMan module (C:\Windows\system32\wsmsvc.dll) is registered but not enabled at the Server level.

Microsoft Forefront Threat Management Gateway (TMG) 2010 Service Pack 2

Microsoft® Forefront Threat Management Gateway (TMG) 2010 Service Pack 2 (SP2) introduces new functionality to Forefront TMG 2010 Standard and Enterprise Editions.

The service pack includes the following new functionality and feature improvements:

New Reports
• The new Site Activity report displays a report showing the data transfer between users and specific websites for any user.

Error Pages
• A new look and feel has been created for error pages.
• Error pages can be more easily customized and can include embedded objects.

Kerberos Authentication
• You can now use Kerberos authentication when you deploy an array using network load balancing (NLB).

Download:

http://www.microsoft.com/download/en/details.aspx?id=27603