What does NTSTATUS 0xC0370001 (STATUS_VID_DUPLICATE_HANDLER) mean?

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Description:

The handler for the virtualization infrastructure driver is already registered. Restarting the virtual machine may fix the problem. If the problem persists, try restarting the physical computer.

Could be also:
Constant	Type	OS
ERROR_VID_DUPLICATE_HANDLER	HRESULT	Windows

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STATUS_IPSEC_DOSP_MAX_PER_IP_RATELIMIT_QUEUES	STATUS_VID_TOO_MANY_HANDLERS

STATUS_VID_DUPLICATE_HANDLER

The same VID handler is already registered

STATUS_VID_DUPLICATE_HANDLER means the host virtualization infrastructure already has a handler for the requested VID message class.

VID already has a handler registered for the requested dispatch path, so the second registration collides with an existing host-side client. Trace the first successful registration and its cleanup owner to find duplicate initialization or a retry that occurs before the original handler is removed.

Differentiate it from STATUS_VID_TOO_MANY_HANDLERS: duplicate handler is a collision on one dispatch identity, while too-many-handlers is exhaustion of the overall table or client limit.

What to inspect

Look for repeated initialization of the same kernel-mode or service component after a failed start or restart.
Check whether a cleanup path failed before the component tried to register again.
Record the VM worker process, service restart sequence, and driver load/unload events around the first failure.

References

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