Microsoft KB Archive/927778

= Cookies from a published Web site are randomly lost after you publish an application that uses forms-based authentication in ISA Server 2004 =

Article ID: 927778

Article Last Modified on 12/4/2007

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APPLIES TO


 * Microsoft Internet Security and Acceleration Server 2004 Standard Edition
 * Microsoft Internet Security and Acceleration Server 2004 Enterprise Edition

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SYMPTOMS
You use Microsoft Internet Security and Acceleration (ISA) Server 2004 to publish a Web site that uses forms-based authentication (cookieAuth) to authenticate client computers. After you do this, ISA Server 2004 randomly removes the Set-Cookie command that the Web server sends to client computers. Therefore, cookies from the published Web site are randomly lost.



CAUSE
This problem occurs when the ISA Server 2004 Outlook Web Access forms-based authentication filter renews the encryption key. The Web server's cookie is lost when ISA Server 2004 sets the ISA Server 2004 cadata cookie and the sessionid cookie. ISA Server 2004 sets these cookies after ISA Server 2004 renews its encryption key.

For more information, click the following article number to view the article in the Microsoft Knowledge Base:

922878 The actual idle time-out period may be shorter than the value that you configure in the Idle Session Timeout area for OWA forms-based authentication in ISA Server 2004



Hotfix information
A supported hotfix is now available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. To create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Prerequisites
You must have ISA Server 2004 Service Pack 2 (SP2) installed to apply this hotfix. For more information about how to obtain this service pack, see the &quot;More Information&quot; section.

Restart requirement
You do not have to restart the computer after you apply this hotfix.

Hotfix replacement information
This hotfix does not replace any other hotfix.

File information
The English version of this hotfix has the file attributes (or later file attributes) 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 item in Control Panel.

ISA Server 2004, Enterprise Edition


STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.



MORE INFORMATION
For more information, click the following article numbers to view the articles in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

885957 How to install ISA Server hotfixes and updates

891024 How to obtain the latest ISA Server 2004 service pack

Additional query words: cookie cookieAuth

Keywords: kbbug kbfix kbqfe kbpubtypekc kbhotfixserver KB927778

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