What does HRESULT 0x80310029 (FVE_E_AUTOUNLOCK_ENABLED) mean?

 
Previous Next
FVE_E_NOT_OS_VOLUME FVE_E_WRONG_BOOTSECTOR

FVE_E_AUTOUNLOCK_ENABLED

FVE_E_AUTOUNLOCK_ENABLED means that BitLocker cannot be turned off on the operating-system drive while associated fixed or removable data drives still use auto-unlock. The auto-unlock relationship depends on key material stored with the OS drive.

How to investigate for FVE_E_AUTOUNLOCK_ENABLED

  • Identify the data drives configured for auto-unlock on this computer before changing OS-drive protection.
  • Disable or reconfigure auto-unlock deliberately, then recheck the OS-drive status.
  • Ensure that each affected data drive has an independent recovery method before removing the relationship.

Microsoft: manage-bde

Diagnostic interpretation of FVE_E_AUTOUNLOCK_ENABLED

FVE_E_AUTOUNLOCK_ENABLED has the HRESULT value 0x80310029. AllStat records the condition as “BitLocker Drive Encryption cannot be turned off on the operating system drive until the auto unlock feature has been disabled for the fixed data drives and removable data drives associated with this computer.”. For FVE_E_AUTOUNLOCK_ENABLED, in practice, interpret that wording at the boundary owned by the Windows component or COM interface that returned the HRESULT, rather than treating the value as a generic Windows message.

Evidence to capture for FVE_E_AUTOUNLOCK_ENABLED

  • Record the exact COM method or Windows API, its input object, the calling thread, and the full 0x80310029 value before a wrapper converts it to an exception or Boolean result.
  • Capture any IErrorInfo text, activity identifier, event-log entry, and subsystem trace that mentions FVE_E_AUTOUNLOCK_ENABLED or the fve / autounlock / enabled operation.
  • Reproduce FVE_E_AUTOUNLOCK_ENABLED with the smallest valid input and note whether the result changes with identity, architecture, service state, or target object.

Retry and recovery for FVE_E_AUTOUNLOCK_ENABLED

Retry FVE_E_AUTOUNLOCK_ENABLED only when the owning API documents a transient state or after the condition described as “BitLocker Drive Encryption cannot be turned off on the operating system drive until the auto unlock feature has been disabled for the fixed data drives and removable data drives associated with this computer.” has changed. For FVE_E_AUTOUNLOCK_ENABLED, configuration, policy, format, and authorization failures normally require correction first; an immediate loop can hide the original call site and add secondary errors.

Looking for a different code? Search another status or error code.