Modify the registry file of the 3389 remote port number

Save as *.reg,0000b6d is the hexadecimal system for port number conversion
Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp]
"PortNumber"=dword:00000b6d

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server\Wds\rdpwd\Tds\tcp]
"PortNumber"=dword:00000b6d