You cannot communicate by means of a VPN/PPTP connection (838573)


The information in this article applies to:

  • Microsoft Windows CE .NET 4.2

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.

RESOLUTION

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 "Applies to" 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://msdn.microsoft.com/library/default.asp?url=/library/en-us/wcedial/html/cerefrassetentryproperties.asp


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

Modification Type:MinorLast Reviewed:5/27/2005
Keywords:kbBug kbfix kbQFE KB838573
©2004 Microsoft Corporation. All rights reserved.