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VDS_E_VOLUME_SHRINK_FVE_LOCKED
VDS_E_VOLUME_SHRINK_FVE_LOCKED identifies the locked-volume branch of VDS BitLocker shrink checks. Microsoft’s protocol text explicitly says to unlock the volume and try again. It is different from a recovery-state volume and from failure to load the BitLocker API used to inspect encryption state.
Unlock access without dismantling protection
The BitLocker PowerShell interface can restore access using an authorized protector such as a password, recovery key, or recovery password. Unlocking is not the same as disabling BitLocker or deleting protectors. Once access is restored, VDS must evaluate the current volume state again before the shrink request is resubmitted.
What to verify
- Verify the mount point and lock state so recovery material is never applied to the wrong encrypted volume.
- Use the approved key protector or recovery process to unlock the data; do not remove protectors simply to satisfy VDS.
- Refresh the volume and calculate the requested shrink again after unlock because usable geometry may have changed.
References
- Microsoft Open Specifications: VDS_E_VOLUME_SHRINK_FVE_LOCKED
- Microsoft: Unlock-BitLocker
- Microsoft: IVdsVolume::Shrink
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