HRESULT 0x800423F8 (VSS_E_MISSING_DISK): meaning and diagnosis

Status / error code:

Category:

Constant name:

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Operating System:

Description:

An expected disk did not arrive in the system.

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VSS_E_LEGACY_PROVIDER	VSS_E_MISSING_HIDDEN_VOLUME

VSS_E_MISSING_DISK

VSS_E_MISSING_DISK A disk expected by the VSS operation did not appear in the system. The source snapshot metadata and the currently visible storage topology do not match.

What to check

Check whether the expected disk, LUN, or virtual disk is online, attached, and visible to Windows.
Review storage, multipath, virtualization, and cluster events for discovery or path failures.
Compare disk identities with the backup or snapshot metadata instead of assuming that a drive letter alone identifies the required disk.

diskpart

list disk

Microsoft: Volume Shadow Copy Service

Microsoft: VSS documentation portal

Microsoft: Failover clustering overview

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