Routing and Remote Access Service Demand-Dial PPTP Connections Randomly Stop Routing Packets (313560)


The information in this article applies to:

  • Microsoft Windows 2000 Advanced Server SP1
  • Microsoft Windows 2000 Advanced Server SP2
  • Microsoft Windows 2000 Professional SP1
  • Microsoft Windows 2000 Professional SP2
  • Microsoft Windows 2000 Server SP1
  • Microsoft Windows 2000 Server SP2
This article was previously published under Q313560

SYMPTOMS

A demand-dial Point-to-Point Tunneling Protocol (PPTP) connection between two Windows 2000 servers that use Routing and Remote Access Service may stop responding. However, the connection indicates in Routing and Remote Access Service that it is still connected. The PPTP connection may be restored if you disconnect, and then reconnect the two Windows 2000 servers.

CAUSE

This problem may occur if you use Network Address Translation (NAT) in Routing and Remote Access Service, or if you are also running Internet Security Acceleration (ISA) on both of the Windows 2000 servers.

RESOLUTION

A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it 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 2000 service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product 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. The English version of this fix 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
   -------------------------------------------------------
   14-Dec-2001  13:39:48  5.0.2195.4770  66,608  Ipnat.sys

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.

MORE INFORMATION

For additional information about how to install several hotfixes with only one restart, click the following article number to view the article in the Microsoft Knowledge Base:

296861 Use QChain.exe to Install Multiple Hotfixes with One Reboot

Modification Type:MinorLast Reviewed:10/6/2005
Keywords:kbHotfixServer kbQFE kbbug kbfix kbHOWTOmaster kbnetwork kbQFE kbWin2000PreSP3Fix kbWin2000sp3fix KB313560
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