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The configuration version for VM < VM name > is out-of-date

The configuration version for VM < VM name > is out-of-date

Mar 16, 2021

Upgrade virtual machine configuration version in Hyper-V on Windows Server

Error Message Encountered:

The configuration version for VM <VM name> is out-of-date

Explanation:

The Hyper-V plugin implements the built-in Resilient Change Tracking (RCT) technology available in Hyper-V starting with Windows Server 2016. RCT is used during backups for changed block tracking capabilities of virtual machines disks.

Virtual machine backup operations with RCT require the Hyper-V virtual machine’s configuration version to be 8.0.

Resolution:

The virtual machines configuration version needs to be upgraded in order to be compatible with Windows Server Hyper-V Resilient Change Tracking (RCT)." For details see: https://docs.microsoft.com/en-us/windows-server/virtualization/hyper-v/deploy/upgrade-virtual-machine-version-in-hyper-v-on-windows-or-windows-server#step-2-upgrade-the-virtual-machine-configuration-version--

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