How to Change RDP Port In Windows Server

1. Start the registry editor. (Type regedit in the Search box.)

2. Navigate to the following registry subkey: 

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Terminal 

Server\WinStations\RDP-Tcp

3. Find PortNumber

4. Click Edit > Modify, and then click Decimal.

5.Type the new port number, and then click OK.

6.Close the registry editor, and restart your Server.