Change the listening port for Remote Desktop on your computer

• 適用対象:

  ✅ Windows Server 2025, ✅ Windows Server 2022, ✅ Windows Server 2019, ✅ Windows Server 2016, ✅ Windows 11, ✅ Windows 10

When you connect to a computer (either a Windows client or Windows Server) through the Remote Desktop client, the Remote Desktop feature on your computer "hears" the connection request through a defined listening port (3389 by default). In this article, you learn how to change the listening port for Remote Desktop client using the registry.

Prerequisites

Before you begin, make sure you have the following items:

• Administrator access, or equivalent, to the computer you want to connect to.

• A computer with Remote Desktop enabled.

• A client to test the changes from, such as Remote Desktop Connect (mstsc.exe).

Configure the listening port for Remote Desktop

To change the listening port, you can use the Registry Editor or PowerShell. Select the method you prefer.

Registry Editor

To change the listening port using the Registry Editor, follow these steps:

1. Select the Start button, type Registry Editor, open Registry Editor from the best match list.

2. Using the navigation pane, expand the key HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp

3. In the main pane, select PortNumber

4. From the menu bar, select Edit > Modify, then select Decimal.

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

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

The next time you connect to this computer by using the Remote Desktop Connection, enter the hostname along with the new port. For example, if you changed the port to use 3390, the address would be PC1.contoso.com:3390 If you're using a firewall, make sure to configure your firewall to permit connections to the new port number.

PowerShell

To change the listening port using PowerShell, follow these steps:

1. Open PowerShell as an administrator.

2. Check the current port by running the following PowerShell command:

   Get-ItemProperty -Path 'HKLM:\SYSTEM\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp' -name "PortNumber"
   

   The following shows an example output:

   PortNumber   : 3389
   PSPath       : Microsoft.PowerShell.Core\Registry::HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp
   PSParentPath : Microsoft.PowerShell.Core\Registry::HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server\WinStations
   PSChildName  : RDP-Tcp
   PSDrive      : HKLM
   PSProvider   : Microsoft.PowerShell.Core\Registry
   

3. Change the port by running the following PowerShell command, replacing <port number> with the new port number:

   $portvalue = <port number>
   
   Set-ItemProperty -Path 'HKLM:\SYSTEM\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp' -name "PortNumber" -Value $portvalue
   

4. Create new firewall rules to allow the new port using the following PowerShell command, replacing <port number> with the new port number:

   New-NetFirewallRule -DisplayName 'RDPPORTLatest-TCP-In' -Profile 'Public' -Direction Inbound -Action Allow -Protocol TCP -LocalPort <port number> 
   New-NetFirewallRule -DisplayName 'RDPPORTLatest-UDP-In' -Profile 'Public' -Direction Inbound -Action Allow -Protocol UDP -LocalPort <port number>