Microsoft KB Archive/929483

= Windows Firewall may drop the connection request when a host computer tries to connect to a client computer that is running Microsoft Windows XP with Service Pack 2 =

Article ID: 929483

Article Last Modified on 8/29/2007

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APPLIES TO


 * Microsoft Windows XP Professional
 * Microsoft Windows XP Home Edition

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SYMPTOMS
On a client computer that is running Microsoft Windows XP with Service Pack 2 (SP2), Windows Firewall may drop the connection request when the host computer tries to connect to the client computer.

This problem occurs if the following conditions are true:
 * The client computer uses a program that is located on a file server.
 * The program is in the client computer's Windows Firewall exception list.
 * The shared folder on the file server is mapped to a drive letter.
 * The path of the file server is a Distributed File System (DFS) path.
 * The file server program authenticates against a host computer.



CAUSE
This problem occurs if the DFS path is incorrectly parsed.



Hotfix information
A supported hotfix is now 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 service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or 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. To create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Prerequisites
To apply this hotfix, you must have Windows XP with Service Pack 2 (SP2) installed.

Restart requirement
You must restart the computer after you apply this hotfix.

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 item in Control Panel.



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.



MORE INFORMATION
For more information about the terms that are used to describe software updates, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Keywords: kbwinxpsp3fix kbwinxppresp3fix kbexpertiseadvanced kbfix kbbug kbhotfixserver kbqfe kbpubtypekc KB929483

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