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PPTP or L2TP/IPsec connection is not reestablished between Forefront TMG 2010 servers

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Symptoms

Consider the following scenario:
  • You install Microsoft Forefront Threat Management Gateway (TMG) 2010 on two servers.
  • You set up a site-to-site VPN connection between the two servers. For example, you set up a PPTP or a L2TP/IPsec connection.
  • The line for the connection recovers from a disruption.
In this scenario, the PPTP or L2TP/IPsec connection is not reestablished between the two servers.

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Cause

This issue occurs because the new allocated address is not added to the network when the unicast address of the dial-out adapter is not available.

The network snapshot contains the dial-out adapter in reconnection. The adapter information is from an in-memory snapshot of IPHelper. However, the retrieval of unicast addresses is from IPHelper. Therefore, a reconnection does not occur when the in-memory snapshot does not contain current adapter information.

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Resolution

Update information

To resolve this issue, install the software update that is described in the following Microsoft Knowledge Base (KB) article:
2498770 Software Update 1 rollup 3 for Forefront Threat Management Gateway (TMG) 2010 Service Pack 1

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Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

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More Information

For more information about software update terminology, 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

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Keywords: kbqfe, kbfix, kbsurveynew, kbexpertiseinter, kb

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Article Info
Article ID : 2498835
Revision : 1
Created on : 3/21/2017
Published on : 2/25/2011
Exists online : False
Views : 315