Use the ping command to confirm the remote host is reachable by IP and hostname.
Find and ensure it is set to Not Configured or Disabled . Summary Table of Common Fixes [Solved] How to Fix RDP Error Code 0x3 - AirDroid
: A common cause is the Remote Desktop Connection Broker ( tssdis.exe ) failing to start automatically after a reboot. Manually starting this service on the server often resolves the issue.
Ensure the essential services are running on the remote machine.
Locate . Set it to Enabled and choose TLS from the drop-down menu.
It is crucial to ensure the connecting user has the necessary right to log in remotely via RDP. A missing permission will block the connection immediately.