This article documents the hotfixes that are currently available for Windows Server 2012-based Failover Clusters. Failover Clustering allows multiple servers to provide high availability of server roles. Failover Clustering is often used for File Services, Virtual Machines, Database Applications, and Mail Applications.
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
Windows Server 2012
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Knowledge Base Article
Why we recommend this hotfix KB2770917
Windows 8 and Windows Server 2012 cumulative update: November 2012
Improves clustered server performance and reliability in Hyper-V and Scale-Out File Server scenarios. Improves SMB service and client reliability under certain stress conditions. Install update 2770917 by using Windows Update in order to receive the cumulative update as described in KB 2770917. KB976424
Error code when the kpasswd protocol fails after you perform an authoritative restore: "KDC_ERROR_S_PRINCIPAL_UNKNOWN" KDCSVC
Install on every domain controller running Windows Server 2008 Service Pack 2 or Windows Server 2008 R2 in order to add a Windows Server 2012 failover cluster. Otherwise Create Cluster may fail when attempting to set the password for the cluster computer object with error message: CreateClusterNameCOIfNotExists (6783): Unable to set password on <ClusterName$> This hotfix is included in Windows Server 2008 R2 Service Pack 1.