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FVE_E_INVALID_PIN_CHARS
Where the operation stops
The value 0x8031009A, named FVE_E_INVALID_PIN_CHARS, is returned when the proposed TPM PIN contains characters outside the set accepted by the current BitLocker policy and preboot path. It belongs to the key-protector lifecycle part of BitLocker rather than to generic file I/O.
A change operation authenticates the old protector and creates replacement wrapping data. An administrator reset follows a different trust path, which is why change and reset errors must not be merged. A BitLocker key protector wraps access to the volume master key. TPM, TPM+PIN, startup key, recovery password, password, certificate and Network Unlock protectors have different volume and policy rules; changing one is not the same as decrypting the volume.
| Question | What to verify |
|---|---|
| Which object failed? | The exact volume GUID, protector GUID, certificate or API target supplied by the caller. |
| Which state matters? | enhanced-PIN policy, allowed character class, keyboard layout, PIN length and whether the call is add, change or reset. |
| What is the nearest false lead? | an incorrect current PIN; this failure occurs while validating the new PIN format. |
Build a minimal diagnostic record
- Record enhanced-PIN policy, allowed character class, keyboard layout, PIN length and whether the call is add, change or reset.
Change only the failed prerequisite
enter a compliant PIN and validate policy/preboot support; never log the PIN value while collecting diagnostics.
manage-bde -protectors -get C:
powershell -NoProfile -Command "Get-BitLockerVolume C: | Format-List KeyProtector,ProtectionStatus,VolumeStatus"State checks specific to FVE_E_INVALID_PIN_CHARS
| Stage | How to interpret it |
|---|---|
| Before the call | Record the target identity and the pre-call key-protector lifecycle state. The proposed TPM PIN contains characters outside the set accepted by the current BitLocker policy and preboot path. |
| At failure | Preserve enhanced-PIN policy, allowed character class, keyboard layout, PIN length and whether the call is add, change or reset. This proves whether this result came from BitLocker itself or from a wrapper translating another result. |
| After correction | Enter a compliant PIN and validate policy/preboot support; never log the PIN value while collecting diagnostics. |
Official documentation
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