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Article ID: 898713 - Last Review: August 29, 2007 - Revision: 2.4

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SYMPTOMS

After you install Microsoft Windows XP Service Pack 2 (SP2) on a computer that is running Windows XP, you cannot connect to a remote computer by using the remote desktop connection tool. Additionally, you receive the following error message:
The remote computer has ended the connection

CAUSE

This problem occurs when Distributed File Systems (DFS) Client functionality is disabled in the following registry subkey on a Windows XP SP2-based computer:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Mup
When DFS is disabled on a Windows XP SP2-based computer, the Remote Desktop Protocol (RDP) causes the connection to fail.

RESOLUTION

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site:
http://support.microsoft.com/contactus/?ws=support (http://support.microsoft.com/contactus/?ws=support)
Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

Because of file dependencies, you must have Windows XP SP2 installed to install this hotfix requires.

Restart requirement

You do not have to restart the computer after you apply this software update.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Rdpdr.sys5.1.2600.2689195,20002-Jun-200501:42x86

WORKAROUND

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 Windows
To work around this problem, re-enable the DFS client in the registry. To do this, follow these steps.
  1. Click Start, click Run, type regedt32 in the Open box, and then click OK.
  2. In Registry Editor, locate and then click the following registry subkey:
    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Mup
  3. In the details pane on the right, double-click DisableDFS. If the value in the Value data box is 1, the DFS client is disabled. If the value in the Value data box is 0, the DFS client is enabled.
  4. In the Edit DWORD Value dialog box, type 0 in the Value data box, and then click OK.
  5. On the File menu, click Exit to quit Registry Editor.

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

APPLIES TO
  • Microsoft Windows XP Professional
  • Microsoft Windows XP Home Edition
  • Microsoft Windows XP Professional SP2
Keywords: 
kbautohotfix kbwinxpsp2fix kbfix kbbug kbpubtypekc kbhotfixserver kbqfe KB898713
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