What does HRESULT 0x80042591 (VDS_E_SHRINK_IN_PROGRESS) mean?

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Description:

A defragmentation or volume shrink operation is already in progress.  Only one of these operations can run at a time.

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VDS_E_ALIGN_IS_ZERO	VDS_E_CANT_INVALIDATE_FVE

VDS_E_SHRINK_IN_PROGRESS

VDS_E_SHRINK_IN_PROGRESS means another shrink or defragmentation operation is already active. Storage layout operations are intentionally serialized because competing operations can invalidate each other’s assumptions.

What to do

Wait for the existing operation to finish or fail before starting another shrink.
Check backup, maintenance, and optimization tasks that may be operating on the same volume.
Do not terminate a storage operation simply to run another one unless the impact and recovery path are understood.

Virtual Disk Service is a legacy COM API. On Windows 8 and Windows Server 2012 and later, inspect and manage supported storage through the Storage Management API and the Storage PowerShell cmdlets.

Microsoft: Get-Volume

Microsoft: VDS error codes

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