HRESULT 0xC03A001C (ERROR_VHD_INVALID_STATE): meaning and diagnosis

Status / error code:

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Constant name:

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Operating System:

Description:

The requested operation cannot be performed on the virtual disk in its current state.

Could be also:
Constant	Type	OS
STATUS_VHD_INVALID_STATE	NTSTATUS	Windows

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ERROR_VHD_INVALID_TYPE	ERROR_VIRTDISK_UNSUPPORTED_DISK_SECTOR_SIZE

ERROR_VHD_INVALID_STATE

ERROR_VHD_INVALID_STATE means the operation is valid in general but cannot be performed while this virtual disk is in its current state, such as attached, in use, read-only, or part of an active chain.

What to verify

Check whether the VHD/VHDX is attached to a running VM, mounted by the host, or used by backup or replication.
Schedule offline maintenance for operations such as chain merge or parent reassignment when required.
Use read-only mounting for inspection when it is safe to do so, and dismount after inspection.

Mount-VHD -Path "D:\Recovery\disk.vhdx" -ReadOnly -PassThru | Get-Disk

Microsoft: Mount-VHD

Microsoft: Merge-VHD

Microsoft: Optimize-VHD

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