The RDP application must be explicitly allowed through your firewall on both the host and client computers.
: On the remote machine, open a Command Prompt as Administrator and run: net stop termservice then net start termservice .
★★★☆☆ (Moderate Difficulty to Resolve) Status: Connection Handshake Failure
In plain English: Your computer and the remote server can’t agree on how to verify your login securely.
Check if the certificate is . If it is, right-click and delete it.