Diskshadow error when you try to create a VSS snapshot

This article describes an issue that triggers an error message when you try to create a Volume Shadow Services (VSS) diskshadow snapshot.

Original product version:   Windows Server 2012 R2
Original KB number:   3025158

Symptoms

When you open an administrator command prompt and create a VSS diskshadow snapshot in Windows Server 2012 or Windows Server 2012 R2, the output may contain an error:

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DISKSHADOW> add volume c:

DISKSHADOW> create

COM call "lvssObject4->GetRootAndLogicalPrefixPaths" failed.

...

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Cause

This error is generated when the backup operation reaches a point, where it tries to process the boot configuration data (BCD) store data. BCD store is in the system partition. But because this partition is not in the list of mounted devices, the error is triggered.

Resolution

This particular COM call failure message is harmless. Despite the message, the shadowcopy backup is completed successfully. Therefore, no resolution is required.

More information

Microsoft is aware of this issue and will continue to investigate for future updates.