Microsoft vient de sortir une liste officielle des tous les KB/hotfixes conseillés pour vos clusters de basculement executant Windows Serveur 2012 R2.

Voila un copié collé de cette liste, le lien original est en dessous

Date that update was added
Related Knowledge Base article
Title
Component
Why we recommend this update

December 18, 2014
3013769

(https://support.microsoft.com/kb/3013769/ )

December 2014 update rollup for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2
Multiple
An update rollup package that resolves issues and includes performance and reliability improvements. Available from Windows Update and for individual download from Download Center. To apply this update, you must first install the update 2919355

(https://support.microsoft.com/kb/2919355/ )

on Windows Server 2012 R2.

November 18, 2014
3000850

(https://support.microsoft.com/kb/3000850/ )

November 2014 update rollup for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2
Multiple
A cumulative update that includes the security updates and nonsecurity updates including Failover Clustering updates that were released between April 2014 and November 2014. Available from Windows Update and for individual download from Download Center. To apply this update, you must first install the update 2919355

(https://support.microsoft.com/kb/2919355/ )

on Windows Server 2012 R2.

April 8, 2014
2919355

(https://support.microsoft.com/kb/2919355/ )

Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 Update April, 2014
Multiple
A cumulative update that includes the security updates and nonsecurity updates including Failover Clustering updates that were released before March 2014. Available from Windows Update and for individual download from Download Center.

Dec. 18, 2013
976424

(https://support.microsoft.com/kb/976424/ )

Error code when the kpasswd protocol fails after you perform an authoritative restore: « KDC_ERROR_S_PRINCIPAL_UNKNOWN »
KDCSVC
Enables you to add a Windows Server 2012 failover cluster. Install on every domain controller that is running Windows Server 2008 Service Pack 2 (SP2) or Windows Server 2008 R2. Otherwise, Create Cluster may fail when you try to set the password for the cluster computer object, and you receive a « CreateClusterNameCOIfNotExists (6783): Unable to set password on <ClusterName$> » error message. This hotfix is included in Windows Server 2008 R2 Service Pack 1 (SP1).

List of KB officially considered critical for Failover Clusters running WS2012R2:

https://support.microsoft.com/kb/2920151/en-us

Bonne lecture et bon patchng

Pierre.