Windows Server 2012 R2 Update is Important

Today we received a note from Microsoft about the importance of Windows Server 2012 R2 Update which is coming to Windows Update on April 8th, 2014. For MSDN and TechNet subscribers this update is already available in the form of an ISO of Windows Server 2012 R2 with the Update included and a smaller collection of 6 updates for Windows 8.1 and Windows Server 2012 R2

In a blog post published on April 2nd, the Microsoft Windows Server Team explains the importance of this update as it provides an easy way to get up to date with the patches, bug-fixes, and improvements that Microsoft has provided since the release of Windows Server 2012 R2. For failover clustering, this update is certainly important as it contains many of the “hoster patches” that Microsoft has worked on in the past six months. The Update consists of six files:

Microsoft recommends to install the Update in this order:

  1. KB2919442
  2. KB2919355
  3. KB2932046
  4. KB2937592
  5. KB2938439
  6. KB2949621

I tried the update on my Windows 8.1 tablet. Because of the large size of KB2919355 (707MB) this update can take a while, so a little patience is required. Of course for multiple clustered Hyper-V hosts, the manual update method is not to be advised. If you have not yet tried Cluster Aware Updating (CAU), an automated cluster aware update tool included with Failover Clustering and available since Windows Server 2012, I strongly advise you to try this out. It not only allows you to install Windows Updates, but also hotfixes, drivers and firmware for your server hardware. Take a look at fellow MVP Didier van Hoye’s blog and video Hands on with Hyper-V Clustering Maintenance Mode & Cluster Aware Updating TechNet Screencast. Another good explanation can be found in chapter 8 of Windows Server 2012 Hyper-V Installation and Configuration Guide by Aidan Finn, Patrick Lownds, Michel Luescher and Damian Flynn.



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