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A physical disk resource may unexpectedly fail or go offline when the IsAlive function is executed on a Windows Server 2008 cluster node

Consider the following scenario:
  • You have a Windows Server 2008 cluster node.
  • The IsAlive function is executed on the cluster node while a file is being accessed in the root folder of the cluster disk.
In this scenario, a physical disk resource on the Windows Server 2008 cluster node may unexpectedly fail or go offline. This behavior occurs randomly.
When the IsAlive function is run while a file in the root folder of a Windows Server 2008 cluster node is being accessed, the logic of the IsAlive function is incorrect. For example, Microsoft SQL Server and Microsoft Exchange Server may store temporary files in the root folder, and these files are frequently created and deleted. If these temporary files are accessed while the IsAlive function is being called, the disk resource and any dependent resources may encounter a failed state. This triggers the cluster service restart logic.

Hotfix information

A 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, visit the following Microsoft Web site: Note 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.

Important Windows Vista and Windows Server 2008 hotfixes are included in the same packages. However, only one of these products may be listed on the “Hotfix Request” page. To request the hotfix package that applies to both Windows Vista and Windows Server 2008, just select the product that is listed on the page.


To apply this hotfix, you must have Windows Server 2008 and the Cluster service installed.

Restart requirement

You have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

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.
Windows Server 2008, x86-based versions
File nameFile versionFile sizeDateTimePlatform
Package_1_for_kb953652~31bf3856ad364e35~x86~~ Applicable1,79001-Jul-200818:03Not Applicable
Package_2_for_kb953652~31bf3856ad364e35~x86~~ Applicable1,78401-Jul-200818:03Not Applicable
Package_for_kb953652_sc_0~31bf3856ad364e35~x86~~ Applicable1,40901-Jul-200818:03Not Applicable
Package_for_kb953652_sc~31bf3856ad364e35~x86~~ Applicable1,42201-Jul-200818:03Not Applicable
Package_for_kb953652_server_0~31bf3856ad364e35~x86~~ Applicable1,41901-Jul-200818:03Not Applicable
Package_for_kb953652_server~31bf3856ad364e35~x86~~ Applicable1,43001-Jul-200818:03Not Applicable
X86_53fe3261a03e43dd8aa95996703ff1fe_31bf3856ad364e35_6.0.6001.22213_none_de30b779b658c033.manifestNot Applicable71101-Jul-200818:03Not Applicable
X86_microsoft-windows-f..overcluster-clusres_31bf3856ad364e35_6.0.6001.22213_none_c15c6eceb61e4def.manifestNot Applicable10,64101-Jul-200805:52Not Applicable
Windows Server 2008, x64-based versions
File nameFile versionFile sizeDateTimePlatform
Amd64_a6d13756db734344d66752cc50e907c4_31bf3856ad364e35_6.0.6001.22213_none_82e6b050109bf6cb.manifestNot Applicable71501-Jul-200818:03Not Applicable
Amd64_microsoft-windows-f..overcluster-clusres_31bf3856ad364e35_6.0.6001.22213_none_1d7b0a526e7bbf25.manifestNot Applicable10,69301-Jul-200808:45Not Applicable
Package_1_for_kb953652~31bf3856ad364e35~amd64~~ Applicable1,80001-Jul-200818:03Not Applicable
Package_2_for_kb953652~31bf3856ad364e35~amd64~~ Applicable1,79401-Jul-200818:03Not Applicable
Package_for_kb953652_sc_0~31bf3856ad364e35~amd64~~ Applicable1,41701-Jul-200818:03Not Applicable
Package_for_kb953652_sc~31bf3856ad364e35~amd64~~ Applicable1,43001-Jul-200818:03Not Applicable
Package_for_kb953652_server_0~31bf3856ad364e35~amd64~~ Applicable1,42701-Jul-200818:03Not Applicable
Package_for_kb953652_server~31bf3856ad364e35~amd64~~ Applicable1,43801-Jul-200818:03Not Applicable
Windows Server 2008, IA-64 version
File nameFile versionFile sizeDateTimePlatform
Ia64_637da9d80a5af8524f93a54d4690e286_31bf3856ad364e35_6.0.6001.22213_none_469597f2c795f19c.manifestNot Applicable71301-Jul-200818:03Not Applicable
Ia64_microsoft-windows-f..overcluster-clusres_31bf3856ad364e35_6.0.6001.22213_none_c15e12c4b61c56eb.manifestNot Applicable10,66701-Jul-200805:17Not Applicable
Package_1_for_kb953652~31bf3856ad364e35~ia64~~ Applicable1,79501-Jul-200818:03Not Applicable
Package_for_kb953652_server_0~31bf3856ad364e35~ia64~~ Applicable1,42301-Jul-200818:03Not Applicable
Package_for_kb953652_server~31bf3856ad364e35~ia64~~ Applicable1,43401-Jul-200818:03Not Applicable
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

Article ID: 953652 - Last Review: 09/11/2010 10:14:00 - Revision: 2.1

  • Windows Server 2008 Datacenter without Hyper-V
  • Windows Server 2008 Enterprise without Hyper-V
  • Windows Server 2008 Datacenter
  • Windows Server 2008 Enterprise
  • Windows Server 2008 for Itanium-Based Systems
  • kbclustering kbautohotfix kbexpertiseinter kbHotfixServer kbqfe KB953652