HRESULT 0x80310001 (FVE_E_NOT_ENCRYPTED): meaning and diagnosis

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Description:

The selected volume is not encrypted by BitLocker, so an encryption-specific operation cannot continue.

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FVE_E_LOCKED_VOLUME	FVE_E_NO_TPM_BIOS

FVE_E_NOT_ENCRYPTED

FVE_E_NOT_ENCRYPTED means that the selected volume is not currently protected by BitLocker. The requested action expects BitLocker metadata or key protectors that do not exist on an unencrypted volume.

How to investigate

Check the volume identity and encryption state with manage-bde -status before choosing an unlock, protector, suspend, or recovery workflow.
Do not treat this result as a lost-key or recovery condition: a volume that was never encrypted cannot be unlocked with a BitLocker recovery password.
If the wrong volume was selected by an automation script, correct the volume identifier rather than attempting to create or remove protectors on another drive.

Microsoft: manage-bde -status

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