Recommended hotfixes and updates for Windows Server 2008 R2 SP1 Failover Clusters


This article documents recommended hotfixes for Windows Server 2008 R2 Service Pack 1 (SP1) Failover Clusters. Applying these fixes can improve the reliability of your high availability solution.

Note We recommend that you evaluate each fix to determine whether it applies to your environment. If you determine that Failover Clusters in your environment may be affected by the problem(s) that a fix addresses, install the fix on each cluster node by using the procedures that are described in Knowledge Base article 174799: Patching Windows Server Failover Clusters.
Use the information in the "More information" section to help you determine whether a particular fix applies to the cluster. Before you install a particular fix, we recommend that you review the original Microsoft Knowledge Base (KB) article that describes the fix.

More Information

Date when the hotfix was added Knowledge Base article Title Component Why we recommend this hotfix
January 22, 20153033918 Disk resource does not come online in Windows Server 2012 R2 or Windows Server 2008 R2-based failover clusterClusres.dllMakes sure that chkdsk works correctly on clustered volumes.
November 19, 20142972254 Hyper-V virtual machines cannot be connected to sometimes when TCP connections reconnect in Windows Clussvc.exe

Prevents connectivity issues between nodes.
July 23, 20142871803 0x0000007E" Stop error when you log off from a Windows Server 2008 R2 SP1-based failover clusterClusauthmgr.dll

Prevents a "blue screen" error when you log off Cluster Administrator. Available for individual download.
November 24, 20122786667 Validate simultaneous failover test fails when you run cluster validation tests on a multi-node failover cluster that is running Windows Server 2008 R2 SP1Clusdisk.sysPrevents validation failure to make sure that configuration is fully supported.
November 17, 20122524478 The network location profile changes from "Domain" to "Public" in Windows 7 or in Windows Server 2008 R2Ncsi.dll


Prevents loss of Cluster communication.
April 25, 20122559392 The List Running Processes test fails when you run the Failover Cluster Validation Wizard on a Windows 7-based or Windows Server 2008 R2-based cluster nodeMultiple Validation DLL’sPrevents Cluster Validation failure. Passing validation is required to have a Supported Cluster configuration.
June 14, 20112545850 Users cannot access an IIS-hosted website after the computer password for the server is changed in Windows 7 or in Windows Server 2008 R2Multiple Authentication DLL’sPrevents CNO and VCO objects from failing to register in DNS because of Kerberos authentication failure after the computer password is changed.

To see the latest list of hotfixes for Windows Server 2008 R2 Hyper-V configurations, see Hyper-V Update List for Windows Server 2008 R2 .

Article ID: 2545685 - Last Review: Mar 25, 2015 - Revision: 1

Windows Server 2008 R2 Service Pack 1