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FVE_E_WIPE_NOT_ALLOWED_ON_TP_STORAGE
What BitLocker has already established
At HRESULT 0x803100A6, BitLocker has determined that wiping free space is blocked on thin-provisioned storage because it would allocate otherwise unallocated extents. The FVE_E_WIPE_NOT_ALLOWED_ON_TP_STORAGE code does not by itself say that the volume master key is lost or that user data is corrupt.
Operational boundary: cluster or thin-storage coordination.
Cluster Shared Volumes and thin-provisioned storage add ownership and allocation semantics that a standalone disk does not have. BitLocker operations must respect the CSV coordinator and must not force thin backing storage to allocate every virtual extent. Thin provisioning reports virtual size separately from allocated backing space. Operations that write every free extent can consume the entire pool without adding user data.
Data to preserve before changing state
Related state to rule out
Do not merge this incident with a wipe that is not currently running; this code rejects starting the operation based on storage semantics. If both appear with this result in one trace, preserve ordering because the first HRESULT normally identifies the prerequisite that caused later cleanup or fallback messages.
How to retest without losing evidence
Skip free-space wipe on the thin volume and use lifecycle controls appropriate to the backing storage when decommissioning.
Get-ClusterSharedVolume | Format-List *
manage-bde -statusState checks specific to FVE_E_WIPE_NOT_ALLOWED_ON_TP_STORAGE
| Stage | How to interpret it |
|---|---|
| Before the call | Record the target identity and the pre-call cluster or thin-storage coordination state. Wiping free space is blocked on thin-provisioned storage because it would allocate otherwise unallocated extents. |
| At failure | Preserve thin-provisioning status, storage pool free capacity, volume allocation, requested manage-bde wipe command and conversion state. |
Microsoft references
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