Windows Remote Desktop Connection for Macintosh:

SUPPORT SOLUTION:
This article describes how to change the port that Remote Desktop listens on.Note The Remote Desktop Connection Client for the Mac supports only port 3389. 3389 is the default port.
You can use the Remote Desktop feature in Microsoft Windows XP Professional to connect to your computer from another remote computer. Warning The Remote Assistance feature in Microsoft Windows XP may not work correctly if you change the listening port.

For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

307711 

(http://support.microsoft.com/kb/307711/
)

Remote Assistance invitation file does not contain correct port number

To have us change the port that Remote Desktop listens on for you, go to the “Fix it for me” section. If you prefer to fix this problem yourself, go to the “Let me fix it myself” section.Fix it for me
3,
To fix this problem automatically, click the Fix it button or link. Click Run
in the File Download dialog box, and follow the steps in the Fix it wizard. a.button { background: url(/library/images/support/KBGraphics/PUBLIC/cn/FixItButton.jpg) no-repeat 0 0; width: 139px; height: 56px; display:block; cursor:pointer; } a.button:hover { background-position: bottom right; } Fix this problem Microsoft Fix it 50595NotesPlease type the new integer port number between 1025 and 65535 during the installation of the Package. Make sure the new port number is not in use by other application.This wizard may be in English only. However, the automatic fix also works for other language versions of Windows.If you are not on the computer that has the problem, save the Fix it solution to a flash drive or a CD and then run it on the computer that has the problem.Then, go to the “Did this fix the problem?” section.Let me fix it myself
3,

To change the port that Remote Desktop listens on, follow these steps.Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base: 322756 

(http://support.microsoft.com/kb/322756/
)
How to back up and restore the registry in WindowsStart Registry Editor.Locate and then click the following registry subkey:HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\TerminalServer\WinStations\RDP-Tcp\PortNumberOn the Edit menu, click Modify, and then click Decimal.Type the new port number, and then click OK. Quit Registry Editor.Restart the computer.Note When you try to connect to this computer by using the Remote Desktop connection, you must type the new port. Maybe you have to set the firewall to allow the new port number before you connect to this computer by using the Remote Desktop connection.304304 

(http://support.microsoft.com/kb/304304/
)
How to configure the Remote Desktop client to connect to a specific port when you use Windows XP

Did this fix the problem?
3,
Check whether the problem is fixed. If the problem is fixed, you are finished with this section. If the problem is not fixed, you can contact support
(http://support.microsoft.com/contactus)
.We would appreciate your feedback. To provide feedback or to report any issues with this solution, please leave a comment on the “Fix it for me
(http://blogs.technet.com/fixit4me/)
” blog or send us an email
(mailto:fixit4me@microsoft.com?Subject=KB)
.

For File Repair and Data Recovery, visit File Repair / Data Recovery