Microsoft pushes emergency fix for Windows Server Hyper-V VM issues

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By Sergiu Gatlan December 20, 2022 06:05 PM

Microsoft has released emergency out-of-band (OOB) Windows Server updates to address a known issue breaking virtual machine (VM) creation on Hyper-V hosts after installing this month’s Patch Tuesday updates.

The issue affects only VMs managed with the System Center Virtual Machine Manager (SCVMM) and using Software Defined Networking (SDN).

On affected systems, Windows admins see warnings during live migration, SLB Load Balancer or SDN RAS Gateway fails, and experience failures when creating new VMs and attaching Virtual Network Interface Cards (VNICs).

Only Windows Server 2019 and Windows Server 2022 should be impacted after installing December 2022 Patch Tuesday updates (KB5021237 and KB5021249).

To resolve this issue, admins must install the OOB cumulative updates released today for their systems on all affected Hyper-V hosts in their environment.

“You do not need to install any update or make any changes to other servers or client devices in your environment to resolve this issue,” Microsoft said on Tuesday.
YOU DO ALL THE WORK AND THEY MAKE THE MONEY..You should send Microsoft a bill for your time..clients will not be happy if you bill them

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