Так... Думаю это поможет... Если не понятно, скажи, переведу
This error indicates that RDP is not available to use TCP port 3389l.
Occasionally, RPC provides 3389 to another service and this does not allow
RDP to function. RPC can be isolated and confirmed if you stop the
MSExchangeSA service.
To keep this from happening in the future add the following using regedt32:
(of course, backup the registry keys before making these changes).
Add the following key if not present:
Highlight the following key:
HKEY_LOCAL_MACHINE\Software\Microsoft\Rpc
From Edit menu select "Add Key..."
Key Name: Internet
Class: <blank>
Add the following values if not prestent:
Highlight the following key:
HKEY_LOCAL_MACHINE\Software\Microsoft\Rpc\Internet
From Edit menu select "Add Value..."
Value Name: Ports
Data Type: REG_MULTI_SZ
Data: 3389-3389
From Edit menu select "Add Value..."
Value Name: PortsInternetAvailable
Data Type: REG_SZ
Data: N
From Edit menu select "Add Value..."
Value Name: UseInternetPorts
Data Type: REG_SZ
Data: Y
Then reboot the server and try again.
Короче, для начала останови сервиc MSExchangeSA, и попробуй подключитса.