Removed nodes can access shared disk resources unexpectedly in Windows Server 2012 R2

Applies to: Windows Server 2012 R2 EssentialsWindows Server 2012 R2 DatacenterWindows Server 2012 R2 Foundation

Symptoms


Consider the following scenario:
  • You have a failover cluster in which nodes are running Windows Server 2012 R2.
  • You stop the cluster service on one of the cluster nodes so that the node is removed from the cluster membership.
  • At the same time, the shared disk resources are brought online to other nodes.
In this scenario, the removed cluster node can access the shared disk resources unexpectedly.

Resolution


To resolve this issue, install update rollup 2962409. For more information about how to obtain this update rollup package, click the following article number to view the article in the Microsoft Knowledge Base:
2962409 Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 update rollup: June 2014

Status


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

More Information


For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates