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FVE_E_NOT_ACTIVATED
FVE_E_NOT_ACTIVATED is BitLocker HRESULT 0x80310008. It means BitLocker Drive Encryption is not enabled on the target volume. The important diagnostic fact is the volume's BitLocker state: this is not an authentication failure, a bad recovery password, or evidence that encrypted sectors are corrupt.
Check the operation against the volume state
BitLocker management methods can require an activated volume before they inspect or change protected-volume metadata. Microsoft documents this HRESULT for operations such as changing an external key, reading the identification field, querying a key protector type, and clearing automatic-unlock keys. In those APIs, the same code says the prerequisite BitLocker state is absent.
Identify the exact volume passed to the API and query its protection and conversion state before retrying. If encryption is supposed to be enabled, verify that a key protector has been added and that the enablement workflow completed on that volume. Do not repair TPM ownership or reset recovery credentials solely because of FVE_E_NOT_ACTIVATED; those actions address different BitLocker failure classes.
References
- Microsoft COM Error Codes: FVE_E_NOT_ACTIVATED
- Win32_EncryptableVolume.ChangeExternalKey
- Microsoft BitLocker configuration guidance
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