[Today’s post comes to us courtesy of Rituraj Choudhary and Manish Kapoor from Commercial Technical Support]
After you have applied updates from KB 2574819 and 2592687 to enable Remote Desktop Protocol 8.0 on a client running Windows 7 Service Pack 1 on a Small Business Server 2011 Standard or Small Business Server 2011 Essentials domain, you may not be able to connect to it with the following error:
   
  
Additionally, if you try to RDP to this client internally (within the domain), you may see this error:
   
  
This issue may occur because in the Inbound Rules of Windows Firewall with Advanced Security, the rule Remote Desktop – RemoteFX (TCP-In) is not enabled on the client.
To enable this rule, click Start , and then type Windows Firewall with Advance Security .
   
  
Open Windows Firewall with Advanced Security and enable the rule Remote Desktop – RemoteFX (TCP-In) .
   
  
Enabling this rule should fix the RDP connectivity issue.