Event ID - 21103

Event Id21103
SourceMicrosoft-Windows-Hyper-V-High-Availability
Description'%1' failed to unregister the virtual machine with the Virtual Machine Management Service.
Event InformationAccording to Microsoft :
Cause :
This event is logged when virtual machine failed to unregister with the Virtual Machine Management Service in Hyper-V.
Resolution :
Check virtual machine registration
Changes to registration of the virtual machine resource are not allowed when the virtual machine is running. Turn off the virtual machine, manually unregister the virtual machine and delete the corresponding configuration files.
Verify :
All the clustered resources are in a healthy state and failover operations are completing successfully.
Reference LinksEvent ID 21103 from Source Microsoft-Windows-Hyper-V-High-Availability

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