As you already know that Microsoft pushed the second update this year for Windows 8.1 and Windows Server 2012 R2.
In this blog post I will list the new updates that applies only for Hyper-V Server 2012 R2.
Here you go 3 bug fixes for Hyper-V:
- KB2972254: Hyper-V virtual machines cannot be connected to sometimes when TCP connections reconnect in Windows Server 2012 R2.
Symptoms: This issue occurs when a node of a failover cluster is removed from active cluster membership.
Symptoms: You have a Windows 2012 R2-based Hyper-V host cluster, or you create Hyper-V virtual machines on the cluster, and then you add shared virtual hard disk files (.vhdx) to the virtual machines.
KB2976884: “Access denied error” when Hyper-V Replica Broker goes online in a Windows Server 2012 or Windows Server 2012 R2 cluster.
Symptoms: You have a Windows Server 2012 R2 or Windows Server 2012 failover cluster that is in a domain, and the domain has a disjoint namespace.
You set the primary Domain Name Service (DNS) suffix of the Windows Server 2012 failover cluster to the disjoint domain name.
You create a Hyper-V Replica Broker in the failover cluster, and then you bring the Hyper-V Replica Broker online.
For detailed information visit: http://support.microsoft.com/kb/2975719
Patch, test, wait and then deploy in Production!!!