HRESULT 0x80310031 (FVE_E_PROTECTOR_EXISTS): meaning and diagnosis

Status / error code:

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Constant name:

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Description:

The requested BitLocker key protector type already exists on the volume.

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FVE_E_BOOTABLE_CDDVD	FVE_E_RELATIVE_PATH

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.

Microsoft: manage-bde

Diagnostic discriminator: Enumerate existing BitLocker key protectors by type before adding the requested one. This status means a protector subject to the single-instance rule already exists.

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