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FVE_E_DE_VOLUME_NOT_SUPPORTED
What BitLocker has already established
At HRESULT 0x803100D3, BitLocker has determined that the selected volume type or layout is outside the set supported by automatic Device Encryption. The FVE_E_DE_VOLUME_NOT_SUPPORTED code does not by itself say that the volume master key is lost or that user data is corrupt.
Operational boundary: automatic Device Encryption.
Automatic Device Encryption is a provisioning and compliance workflow layered on BitLocker. It evaluates platform eligibility, account-backed recovery escrow, all applicable fixed volumes and protection state; failure of Auto-DE does not automatically mean manual BitLocker is unavailable. Automatic Device Encryption has stricter end-to-end prerequisites than manual BitLocker. An Auto-DE HRESULT should be reported with the device-encryption support reason and account/escrow state.
Data to preserve before changing state
Related state to rule out
Do not merge this incident with manual BitLocker support, which may still exist for the same volume under administrator control. 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
Manage the volume with an appropriate manual BitLocker policy or redesign the storage layout instead of forcing Auto-DE.
msinfo32.exe
powershell -NoProfile -Command "Get-BitLockerVolume | Format-Table MountPoint,VolumeType,VolumeStatus,ProtectionStatus"Volume eligibility is the failing axis
This result is tied to the selected volume rather than the computer-wide hardware posture. Record whether the target is fixed or removable, its partition role, filesystem, bus type and any hidden or recovery attributes. Other volumes on the same computer can qualify for automatic Device Encryption while this one remains outside the supported set.
Do not clear or replace the TPM to address this code. Decide whether the volume should be manually managed with BitLocker, excluded by design, or recreated with a supported storage role.
State checks specific to FVE_E_DE_VOLUME_NOT_SUPPORTED
| Stage | How to interpret it |
|---|---|
| Before the call | Record the target identity and the pre-call automatic Device Encryption state. The selected volume type or layout is outside the set supported by automatic Device Encryption. |
| At failure | Preserve volume role, bus/media type, filesystem, partition attributes, fixed/removable classification and device-encryption policy scope. |
Microsoft references
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