Article ID: 973737 - Last Review: August 31, 2009 - Revision: 1.1

ISA Server 2006 does not pass the last server cookie to the client computer when HTML form authentication is used in the Web-publishing rule

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SYMPTOMS

Consider the following scenario:
  • In Microsoft Internet Security and Acceleration (ISA) Server 2006, you configure a Web-publishing rule that uses HTML form authentication.
  • You browse to the published Web server from a client computer.
  • The Web server replies with a "401 Unauthorized" response that includes several server cookies.
In this scenario, the client does not receive the last cookie from the server response. This behavior may break the application layer protocol between the client computer and the published Web server.
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CAUSE

This problem occurs because the Forms-Based Authentication filter incorrectly parses the server response. Therefore, the filter misses the last cookie.
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RESOLUTION

To resolve this problem, apply the hotfix rollup package that is described in the following Microsoft Knowledge Base article:

973738  (http://support.microsoft.com/kb/973738/ ) Description of the ISA Server 2006 hotfix package: July 19, 2009
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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

This problem affects SharePoint publishing when a user uses the “Sign in as a different user” functionality and then tries to sign in by using the previously logged-on account. In this situation, the user cannot use the original user account to log on again.
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REFERENCES

For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684  (http://support.microsoft.com/kb/824684/ ) Description of the standard terminology that is used to describe Microsoft software updates
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APPLIES TO
  • Microsoft Internet Security and Acceleration Server 2006 Service Pack 1, when used with:
    • Microsoft Internet Security and Acceleration Server 2006 Standard Edition
    • Microsoft Internet Security and Acceleration Server 2006 Enterprise Edition
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Keywords: 
kbexpertiseinter kbfix kbsurveynew kbqfe KB973737
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