Essa é bacana…
Certa vez, precisei mudar a porta do terminal server da 3389 para 5689 em uma máquina desktop rodando sistema desktop.
Vamos lá:
Cria um arquivo txt e coloca este conteúdo:
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp]
"CfgDll"="RDPCFGEX.DLL"
"fEnableWinStation"=dword:00000001
"MaxInstanceCount"=dword:ffffffff
"PdName"="tcp"
"PdClass"=dword:00000002
"PdDLL"="tdtcp"
"PdFlag"=dword:0000004e
"OutBufLength"=dword:00000212
"OutBufCount"=dword:00000006
"OutBufDelay"=dword:00000064
"InteractiveDelay"=dword:00000032
"PortNumber"=dword:00000d3d
"KeepAliveTimeout"=dword:00000000
"LanAdapter"=dword:00000000
"WdName"="Microsoft RDP 5.1"
"WdDLL"="rdpwd"
"WsxDLL"="rdpwsx"
"WdFlag"=dword:00000036
"InputBufferLength"=dword:00000800
"CdClass"=dword:00000000
"CdName"=""
"CdDLL"=""
"CdFlag"=dword:00000000
"Comment"=""
"fInheritAutoLogon"=dword:00000001
"fInheritResetBroken"=dword:00000001
"fInheritReconnectSame"=dword:00000001
"fInheritInitialProgram"=dword:00000001
"fInheritCallback"=dword:00000000
"fInheritCallbackNumber"=dword:00000001
"fInheritShadow"=dword:00000001
"fInheritMaxSessionTime"=dword:00000001
"fInheritMaxDisconnectionTime"=dword:00000001
"fInheritMaxIdleTime"=dword:00000001
"fInheritAutoClient"=dword:00000001
"fInheritSecurity"=dword:00000000
"fInheritColorDepth"=dword:00000000
"fPromptForPassword"=dword:00000000
"fResetBroken"=dword:00000000
"fReconnectSame"=dword:00000000
"fLogonDisabled"=dword:00000000
"fAutoClientDrives"=dword:00000001
"fAutoClientLpts"=dword:00000001
"fForceClientLptDef"=dword:00000001
"fDisableEncryption"=dword:00000001
"fHomeDirectoryMapRoot"=dword:00000000
"fUseDefaultGina"=dword:00000000
"fDisableCpm"=dword:00000000
"fDisableCdm"=dword:00000000
"fDisableCcm"=dword:00000000
"fDisableLPT"=dword:00000000
"fDisableClip"=dword:00000000
"fDisableExe"=dword:00000000
"fDisableCam"=dword:00000000
"Username"=""
"Domain"=""
"Password"=""
"WorkDirectory"=""
"InitialProgram"=""
"CallbackNumber"=""
"Callback"=dword:00000000
"Shadow"=dword:00000001
"MaxConnectionTime"=dword:00000000
"MaxDisconnectionTime"=dword:00000000
"MaxIdleTime"=dword:00000000
"KeyboardLayout"=dword:00000000
"MinEncryptionLevel"=dword:00000002
"NWLogonServer"=""
"WFProfilePath"=""
"WdPrefix"="RDP"
"TraceEnable"=dword:00000000
"TraceDebugger"=dword:00000000
"TraceClass"=dword:00000000
"ColorDepth"=dword:00000003
Troque a extensão do arquivo para .REG .
Na linha que tem: “PortNumber”=dword:00000d3d você troca o 00000d3d pelo número da porta que você deseja… Por exemplo a porta 5689 ficaria 00001639…
Pronto! Reinicia o serviço e tá lá…