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FVE_E_PROTECTOR_EXISTS
FVE_E_PROTECTOR_EXISTS means that BitLocker rejected adding a duplicate protector of a type that is limited to one instance for the selected volume.
How to investigate for FVE_E_PROTECTOR_EXISTS
- List the existing protectors and compare the requested type with the current configuration.
- Use the existing protector where appropriate instead of adding a duplicate.
- When replacement is required, verify the new recovery path before removing an old protector.
Diagnostic interpretation
This result has the HRESULT value 0x80310031. AllStat records the condition as “This key protector cannot be added. Only one key protector of this type is allowed for this drive.”.
Evidence to capture
- Capture any IErrorInfo text, activity identifier, event-log entry, and subsystem trace that mentions this result or the fve / protector / exists operation.
- Reproduce this result with the smallest valid input and note whether the result changes with identity, architecture, service state, or target object.
Retry and recovery
Retry this result only when the owning API documents a transient state or after the condition described as “This key protector cannot be added. ” has changed.
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