Event ID - 10104

Event Id10104
DescriptionFailed to revert to VSS snapshot on one or more virtual hard disks of the virtual machine '%1'. (Virtual machine ID %2)
Event InformationAccording to Microsoft :
Cause :
This event is logged when You back up a Hyper-V virtual machine that has multiple volumes, the backup may fail.
Cause 1:
The Microsoft Hyper-V VSS Writer may enter an unstable state if a backup of the Hyper-V virtual machine fails. If you run the vssadmin list writers command, the Microsoft Hyper-V VSS Writer is not listed.
Cause 3:
You cannot restore a Hyper-V virtual machine if the virtual machine was configured to use a legacy network adapter.
Resolution :
The Hyper-V Virtual Machine Management service must be restarted.
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