The connection was lost due to a network error (RDP)

Event viewer Error Message:
The RDP protocol component “DATA ENCRYPTION” detected an error in the protocol stream and has disconnected the client

Solution

Click start

Run type regedit

Get to this registry : HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\TermService\Parameters

Delete all of the following registry keys

X509 Certificate 
X509 Certificate ID
Certificate

Note that you may not have all three registry keys.