After an ISA Server 2006 application filter establishes an HTTP connection, the connection closes before it can be used, and a "0x80004001 (E_NOTIMPL)" status code is logged

Article translations Article translations
Article ID: 941634 - View products that this article applies to.
Expand all | Collapse all

SYMPTOMS

Consider the following scenario:
  • You develop an application filter for Microsoft Internet Security and Acceleration (ISA) Server 2006.
  • This application filter establishes an HTTP connection.
  • An S_OK value indicates that the connection has been successfully established.
In this scenario, the connection closes before it can be used. If you have enabled ISA logging, a "0x80004001 (E_NOTIMPL)" status code is logged.

This problem occurs only if the Web Proxy Filter is enabled for the HTTP protocol.

CAUSE

This problem occurs because the Web Proxy Filter incorrectly uses sockets and connections that are created by other application filters. Therefore, the Web Proxy Filter cannot be chained to other application filters.

RESOLUTION

To resolve this problem, apply the hotfix rollup package that is described in Microsoft Knowledge Base article 942639. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
942639 Description of the ISA Server 2006 hotfix package: September 24, 2007

STATUS

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

Properties

Article ID: 941634 - Last Review: October 26, 2007 - Revision: 2.1
APPLIES TO
  • Microsoft Internet Security and Acceleration Server 2006 Enterprise Edition
  • Microsoft Internet Security and Acceleration Server 2006 Standard Edition
Keywords: 
kbexpertiseinter kbqfe KB941634

Give Feedback

 

Contact us for more help

Contact us for more help
Connect with Answer Desk for expert help.
Get more support from smallbusiness.support.microsoft.com