Restore of Hyper-V VM Failed with "Hyper-V VSS Writer is not in proper state while restore"

Summary: This article provides a solution for Hyper-V restore failure due to Volume Shadow Copy Service (VSS) writer.

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Symptoms

Hyper-V VSS restore is failing with errors similar to the following message:

avhypervvss Error <41548>: Hyper-V VSS Writer is not in proper state while restore. Failed to recover 'SCVMM DELLEMC Resources<XXXX>'.
avhypervvss Error <41624>: Failed to restore targets.
avhypervvss Error <41620>: Recover did not complete successfully

Cause

Microsoft Hyper-V VSS writer might be in a failed state on the Hyper-V host server. This can be verified by running the following command in the Windows Command or PowerShell prompt:

vssadmin list writers

Resolution

  1. Open the services.msc console and restart the Hyper-V Virtual Machine Management service on the Hyper-V host server:

Open console and restart the Hyper-V Virtual Machine Management service

  1. Verify that the Hyper-V writer is in a good state by running the following command in the Windows Command or PowerShell prompt:
vssadmin list writers
  1. Re-run the Hyper-V virtual machine (VM) restore.

Affected Products

Avamar

Products

Avamar, Avamar Plug-in for Hyper-V VSS
Article Properties
Article Number: 000038136
Article Type: Solution
Last Modified: 11 Jun 2025
Version:  4
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