Microsoft KB Archive/838573

= You cannot communicate by means of a VPN/PPTP connection =

Article ID: 838573

Article Last Modified on 5/21/2007

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APPLIES TO


 * Microsoft Windows CE .NET 4.2

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For a Microsoft Windows CE .NET 4.1 version of this article, see 824348.



SYMPTOMS
After you establish a virtual private network (VPN) or Point-to-Point Tunneling Protocol (PPTP) (VPN/PPTP) connection to a network whose subnet includes the subnet of the base network, the client cannot communicate.

For example, if the base subnet is 10.20.x.x, and if the VPN/PPTP subnet is 10.x.x.x, you cannot reach any network destinations.



CAUSE
This problem occurs because the IP routing table is not set up correctly.



Hotfix Information
A supported software update is now available from Microsoft as Windows CE 4.2 Core OS QFE 838573. To resolve this problem immediately, click the following article number for information about obtaining Windows CE Platform Builder and core operating system software updates:

837392 How to locate core operating system fixes for Microsoft Windows CE Platform Builder products

Prerequisites
This fix is supported only when all previously issued fixes for this product have also been installed.

Restart Requirement
After you install this update, you must perform a clean build of the whole platform. To clean the platform, click Clean on the Build menu. To build the platform, click Build Platform on the Build menu.

Hotfix Replacement Information
This hotfix does not replace any other hotfixes.

File Information
The English version of this package has the file attributes (or later) that are listed in the following table.   Date         Time   Version            Size    File name --

06-Apr-2004 01:28  4.21              781,048  Wincepb42-040405-kb838573-armv4.exe 06-Apr-2004 01:28  4.21              781,048  Wincepb42-040405-kb838573-armv4i.exe 06-Apr-2004 01:28  4.21              793,336  Wincepb42-040405-kb838573-mipsii.exe 06-Apr-2004 01:28  4.21              793,336  Wincepb42-040405-kb838573-mipsii_fp.exe 06-Apr-2004 01:28  4.21              797,432  Wincepb42-040405-kb838573-mipsiv.exe 06-Apr-2004 01:28  4.21              797,432  Wincepb42-040405-kb838573-mipsiv_fp.exe 06-Apr-2004 01:28  4.21              768,760  Wincepb42-040405-kb838573-sh3.exe 06-Apr-2004 01:28  4.21              768,760  Wincepb42-040405-kb838573-sh4.exe 06-Apr-2004 01:28  4.21              752,376  Wincepb42-040405-kb838573-x86.exe The English version of this hotfix has the file attributes (or later) 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.   Date         Time   Version            Size    File name --

Path: Public\Common\Oak\Lib\Armv4\Debug 17-Mar-2004 22:36                    398,112  Ppp2app.lib 17-Mar-2004 22:36                    102,400  Ppp2app.pdb

Path: Public\Common\Oak\Lib\Armv4\Retail 17-Mar-2004 22:36                    241,682  Ppp2app.lib 17-Mar-2004 22:36                    102,400  Ppp2app.pdb

Path: Public\Common\Oak\Lib\Armv4i\Debug 17-Mar-2004 22:36                    398,712  Ppp2app.lib 17-Mar-2004 22:36                    102,400  Ppp2app.pdb

Path: Public\Common\Oak\Lib\Armv4i\Retail 17-Mar-2004 22:36                    242,358  Ppp2app.lib 17-Mar-2004 22:36                    102,400  Ppp2app.pdb

Path: Public\Common\Oak\Lib\Mipsii\Debug 17-Mar-2004 22:36                    414,210  Ppp2app.lib 17-Mar-2004 22:36                    102,400  Ppp2app.pdb

Path: Public\Common\Oak\Lib\Mipsii\Retail 17-Mar-2004 22:36                    248,830  Ppp2app.lib 17-Mar-2004 22:36                    102,400  Ppp2app.pdb

Path: Public\Common\Oak\Lib\Mipsii_fp\Debug 17-Mar-2004 22:36                    414,272  Ppp2app.lib 17-Mar-2004 22:36                    102,400  Ppp2app.pdb

Path: Public\Common\Oak\Lib\Mipsii_fp\Retail 17-Mar-2004 22:36                    248,868  Ppp2app.lib 17-Mar-2004 22:36                    102,400  Ppp2app.pdb

Path: Public\Common\Oak\Lib\Mipsiv\Debug 17-Mar-2004 22:37                    417,802  Ppp2app.lib 17-Mar-2004 22:37                    102,400  Ppp2app.pdb

Path: Public\Common\Oak\Lib\Mipsiv\Retail 17-Mar-2004 22:36                    250,720  Ppp2app.lib 17-Mar-2004 22:36                    102,400  Ppp2app.pdb

Path: Public\Common\Oak\Lib\Mipsiv_fp\Debug 17-Mar-2004 22:37                    417,864  Ppp2app.lib 17-Mar-2004 22:37                    102,400  Ppp2app.pdb

Path: Public\Common\Oak\Lib\Mipsiv_fp\Retail 17-Mar-2004 22:37                    250,758  Ppp2app.lib 17-Mar-2004 22:37                    102,400  Ppp2app.pdb

Path: Public\Common\Oak\Lib\Sh3\Debug 17-Mar-2004 22:37                    361,792  Ppp2app.lib 17-Mar-2004 22:37                    102,400  Ppp2app.pdb

Path: Public\Common\Oak\Lib\Sh3\Retail 17-Mar-2004 22:37                    227,278  Ppp2app.lib 17-Mar-2004 22:37                    102,400  Ppp2app.pdb

Path: Public\Common\Oak\Lib\Sh4\Debug 17-Mar-2004 22:37                    361,636  Ppp2app.lib 17-Mar-2004 22:37                    102,400  Ppp2app.pdb

Path: Public\Common\Oak\Lib\Sh4\Retail 17-Mar-2004 22:37                    226,940  Ppp2app.lib 17-Mar-2004 22:37                    102,400  Ppp2app.pdb

Path: Public\Common\Oak\Lib\X86\Debug 17-Mar-2004 22:36                    354,700  Ppp2app.lib 17-Mar-2004 22:36                    102,400  Ppp2app.pdb

Path: Public\Common\Oak\Lib\X86\Retail 17-Mar-2004 22:36                    211,090  Ppp2app.lib 17-Mar-2004 22:36                    102,400  Ppp2app.pdb



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



MORE INFORMATION
After you apply this update, and when you set up VPN connections that have this problem, you must also set the RASEO_RemoteDefaultGateway flag. You can find this flag in the dwfOptions member of the RASENTRY structure that is passed to the RasSetEntryProperties function.

For more information about the RasSetEntryProperties function, visit the following MSDN Web site:

http://msdn2.microsoft.com/en-us/library/ms897119.aspx

For additional information about a similar issue in Windows CE .NET 4.1, click the following article number to view the article in the Microsoft Knowledge Base:

822160 FIX: You cannot use virtual private network (VPN) or Point-to-Point Tunneling Protocol (PPTP) over certain networks

For additional 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 KB838573

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