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FIX: Dynamic Caching may incorrectly delete recently cached objects from a caching server that is running Forefront Threat Management Gateway 2010 or Internet Security and Acceleration Server 2006
Article ID: 2694478 - View products that this article applies to.
When you use Dynamic Caching for a web server, Dynamic Caching may incorrectly delete recently cached objects from a caching server that is running Forefront Threat Management Gateway 2010 or Internet Security and Acceleration Server 2006when concurrent requests are made for the same object and when the object is currently not cached.
For example, consider the following scenario:
In this scenario, the next request for the same object may cause additional requests to the web server. However, you expect the request instead to be served from the cache.
Note The cache is updated and works as expected unless all the conditions in this scenario are met.
To resolve this problem, apply one of the following fixes:
Forefront Threat Management Gateway 2010To resolve this problem, install the hotfix package that is described in the following Microsoft Knowledge Base article:
(http://support.microsoft.com/kb/2689195/ )Rollup 2 for Forefront Threat Management Gateway (TMG) 2010 Service Pack 2
Internet Security and Acceleration Server 2006A supported hotfix is 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 the problem described in this article. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.
If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.
Note If additional issues occur or if 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. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, go to the following Microsoft website:
http://support.microsoft.com/contactus/?ws=supportNote The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.
PrerequisitesYou must have Microsoft Internet Security and Acceleration Server 2006 Service Pack 1 (SP1) installed to apply this hotfix.
Restart informationYou may have to restart the computer after you apply this hotfix.
Replacement informationThis hotfix does not replace a previously released hotfix.
File informationThe 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.
Collapse this tableExpand this table
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/824684/ )Description of the standard terminology that is used to describe Microsoft software updates
Article ID: 2694478 - Last Review: May 4, 2012 - Revision: 1.0