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.

Applies to:   Windows Server 2008 R2 Service Pack 1
Original KB number:   2545685


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 How to update 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.

Date when the hotfix was added Knowledge Base article Title Component Why we recommend this hotfix
January 22, 2015 3033918 Disk resource does not come online in Windows Server 2012 R2 or Windows Server 2008 R2-based failover cluster Clusres.dll Makes sure that chkdsk works correctly on clustered volumes.
November 19, 2014 2972254 Hyper-V virtual machines cannot be connected to sometimes when TCP connections reconnect in Windows Clussvc.exe

Prevents connectivity issues between nodes.
July 23, 2014 2871803 0x0000007E Stop error when you log off from a Windows Server 2008 R2 SP1-based failover cluster Clusauthmgr.dll

Prevents a blue screen error when you log off Cluster Administrator. Available for individual download.
November 17, 2012 2524478 The network location profile changes from Domain to Public in Windows 7 or in Windows Server 2008 R2 Ncsi.dll


Prevents loss of Cluster communication.
April 25, 2012 2559392 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 node Multiple Validation DLL's Prevents Cluster Validation failure. Passing validation is required to have a Supported Cluster configuration.
June 14, 2011 2545850 Users cannot access an IIS-hosted website after the computer password for the server is changed in Windows 7 or in Windows Server 2008 R2 Multiple Authentication DLL's Prevents 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.