What does HRESULT 0x8031006C (FVE_E_FIPS_PREVENTS_PASSPHRASE) mean?

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The Group Policy setting requiring FIPS compliance prevents passwords from being generated or used. Please contact your system administrator for more information.

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FVE_E_POLICY_PASSPHRASE_REQUIRED	FVE_E_OS_VOLUME_PASSPHRASE_NOT_ALLOWED

FVE_E_FIPS_PREVENTS_PASSPHRASE

Where the operation stops

The value 0x8031006C, named FVE_E_FIPS_PREVENTS_PASSPHRASE, is returned when FIPS-restricted policy disallows the password/passphrase protector path requested for the volume. It belongs to the FIPS-restricted key management part of BitLocker rather than to generic file I/O.

FIPS mode does not translate into “turn encryption off.” It constrains algorithms and key-handling paths, so the correct remedy is to select a permitted protector and escrow design. FIPS-restricted operation changes which protector, export and key-derivation paths BitLocker may use. The volume encryption algorithm and the protector workflow are separate layers, so a FIPS-related HRESULT should be traced to the exact protector or key-management call.

Question	What to verify
Which object failed?	The exact volume GUID, protector GUID, certificate or API target supplied by the caller.
Which state matters?	FIPS state, drive type, effective password-protector policy, existing protectors and the exact add/change method.
What is the nearest false lead?	a password that is too long, too simple or typed incorrectly; those validations occur only when password protectors are allowed.

Build a minimal diagnostic record

Record FIPS state, drive type, effective password-protector policy, existing protectors and the exact add/change method.

Change only the failed prerequisite

select a compliant recovery or certificate-based design instead of weakening validation or storing an unapproved passphrase.

manage-bde -protectors -get C:
gpresult /h bitlocker-policy.html

State checks specific to FVE_E_FIPS_PREVENTS_PASSPHRASE

Stage	How to interpret it
Before the call	Record the target identity and the pre-call FIPS-restricted key management state. FIPS-restricted policy disallows the password/passphrase protector path requested for the volume.
At failure	Preserve FIPS state, drive type, effective password-protector policy, existing protectors and the exact add/change method. This proves whether this result came from BitLocker itself or from a wrapper translating another result.
After correction	Select a compliant recovery or certificate-based design instead of weakening validation or storing an unapproved passphrase.

Official documentation

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