Microsoft KB Archive/940871

= On an x64-based version of Windows Server 2003 SP2, a PPP dial-up connection uses the default gateway on the remote network even if you disable this option in the TCP/IP settings =

Article ID: 940871

Article Last Modified on 10/11/2007

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APPLIES TO

 Microsoft Windows Server 2003 Service Pack 2, when used with:  Microsoft Windows Server 2003, Datacenter x64 Edition

 Microsoft Windows Server 2003, Enterprise x64 Edition

 Microsoft Windows Server 2003, Standard x64 Edition

 Microsoft Windows XP Professional x64 Edition</li></ul> </li></ul>

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SYMPTOMS
Consider the following scenario. On a Microsoft Windows Server 2003-based computer, you have a Point to Point Protocol (PPP) dial-up networking connection. This PPP connection has the following option configured:

On the General tab in the Advanced TCP/IP Settings dialog box, the Use default gateway on remote network check box is cleared.

Note To view this option, follow these steps:
 * 1) Right-click the dial-up networking connection, and then click Properties.
 * 2) Click the Networking tab, click Internet Protocol (TCP/IP), and then click Properties.
 * 3) Click Advanced.

When you establish a connection in this scenario, the IP address of the default gateway on the remote network is incorrectly set to the address of the PPP connection. You do not expect the dial-up connection to use the default gateway on the remote computer after you disable this option.

This problem occurs if the following conditions are true:
 * You use a 32-bit program to establish the dial-up connection.
 * The 32-bit program is running on an x64-based version of Windows Server 2003 Service Pack 2 (SP2).

Note You do not experience this problem when you use the program on a 32-bit version of Windows Server 2003.

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CAUSE
This problem occurs because of a problem in Windows Server 2003 SP2.

On an x64-based version of Windows Server 2003 SP2, the correct Remote Access Service Manager (RASMAN) values are not copied into the thunking structure. Therefore, a 32-bit dialing program appears to ignore the 64-bit networking settings.

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Hotfix information
A supported hotfix is now available from Microsoft. However, it is intended to correct only the problem that is described in this article. Apply it only to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Windows Server 2003 service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Customer Support Services to obtain the hotfix. For a complete list of Microsoft Customer Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

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

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Prerequisites
You must be running one of the following to apply this hotfix:
 * Windows Server 2003 Service Pack 1 (SP1)
 * Windows Server 2003 Service Pack 2 (SP2)
 * Windows Server 2003, x64 Edition

Restart requirement
You do not have to restart the computer after you apply this hotfix.

Hotfix replacement information
This hotfix does not replace any other hotfix.

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.

Windows Server 2003, Itanium-based systems
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STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.

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MORE INFORMATION
Note The hotfix that is mentioned in this article also modifies the behavior of the dial-up networking APIs. For more information, 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: kbbug kbfix kbqfe kbpubtypekc kbhotfixserver kbwinserv2003postsp2fix KB940871

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