PowerProtect Data Manager: Unable to Remove Hyper-V VM Asset from the Protection Policy

Summary: This article describes the issue when deleting Hyper-V virtual machines (VM) in the PowerProtect Data Manager UI.

This article applies to This article does not apply to This article is not tied to any specific product. Not all product versions are identified in this article.
Check out other resources

Symptoms

Unable to remove a Hyper‑V VM from a Protection Policy in PowerProtect Data Manager. The following message appears when removing a Hyper-V VM asset from either a Protection Policy or from the Assets tab. 

Error
404: Missing document ID XXXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXX
Check to ensure that the resource if exits.

screenshot of error for missing document

The asset‑storage log shows the following error message:

Caused by: java.lang.IllegalStateException: Duplicate key d4f8654d-9a75-44a2-b248-04653b1DELL-disk-key-100_differencing.vhd (attempted merging values class FtVirtualMachineDisk {
    com.emc.dpsg.ppdm.assetstoragesvc.model.fieldtype.FtVirtualMachineDisk@eaa3c6a3
    name: d4f8654d-9a75-44a2-b248-04653b1DELL-disk-key-100_differencing.vhd
    externalId: C:\Program Files\Dell\PPDM Hyper-V Agent\tmp\97aa99bc-5b0a-45f5-8c1c-3877bbdb61bb\1767810686/d4f8654d-9a75-44a2-b248-04653b1DELL-disk-key-100_differencing.vhd
    containingFolder: C:\Program Files\Dell\PPDM Hyper-V Agent\tmp\97aa99bc-5b0a-45f5-8c1c-3877bbdb61bb\1767810686
    sizeAllocationType: Differencing
    format: VHD
    usedSize: 7.1716864E7
    totalSize: 1.363673088E11
    excluded: false
    storageSources: null
    type: null
    busType: null
    deviceIndex: null

Cause

This is a known issue in PowerProtect Data Manager 19.19.0-15 or later. The Hyper-V VM has multiple virtual hard disk (VHD) files with the same file name.

Resolution

A hotfix has been created to address the issue in PowerProtect Data Manager 20.1.0-17 and 19.22.0-16. If required, contact Dell Support for assistance or any further questions and to request the hotfix.

Additional Information

Impact: Without the hotfix, removing VMs from the Hyper‑V server or cluster does not clean up assets in PowerProtect Data Manager UI, leading to stale entries.

Affected Products

PowerProtect Data Manager
Article Properties
Article Number: 000462583
Article Type: Solution
Last Modified: 27 مايو 2026
Version:  1
Find answers to your questions from other Dell users
Support Services
Check if your device is covered by Support Services.