- Start Registry Editor (regedit).
- Locate and then click the following registry subkey: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\TerminalServer\WinStations\RDP-Tcp\PortNumber
- On the Edit menu, click Modify, and then click Decimal.
- Type the new port number, and then click OK.
- Quit Registry Editor.
- Restart the computer.