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ERROR_VOLSNAP_PREPARE_HIBERNATE
What ERROR_VOLSNAP_PREPARE_HIBERNATE means
This is a progress or retry-later condition during coordination between VSS, storage, and power management. It does not by itself indicate that the shadow copy or the volume is corrupt.
Where it appears
- system hibernation with active shadow-copy infrastructure
- backup providers quiescing volumes
- storage filters responding to power transition
Likely causes
- normal VSS preparation still in progress
- a provider or writer taking longer than expected
- I/O backlog delaying volume quiescence
What to collect
- VSS writer and provider state
- System and Application events from VSS and Volsnap
- hibernation start time and timeout
- active backup jobs and storage latency
How to respond
Allow the preparation phase to finish and avoid starting competing snapshot work. If the state persists, identify the blocked VSS writer or provider, clear failed backup sessions using supported tools, and retest hibernation.
References
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