What does NTSTATUS 0xC0210024 (STATUS_FVE_NO_AUTOUNLOCK_MASTER_KEY) mean?

STATUS_FVE_NO_AUTOUNLOCK_MASTER_KEY

Meaning and context of STATUS_FVE_NO_AUTOUNLOCK_MASTER_KEY

Automatic unlock is a relationship between an encrypted data volume and information protected on the operating-system volume. This status means the OS-side material needed for that relationship was not available; it is not simply a wrong password entered for the data drive.

Confirm that the target is a non-OS data volume and inspect both the data volume and the operating-system volume. The BitLocker planning documentation distinguishes auto-unlock from the usual interactive recovery mechanisms, and manage-bde -autounlock manages this feature explicitly.

Keep a usable recovery method before clearing or rebuilding automatic-unlock settings. Re-enabling auto-unlock without verifying the OS drive, the data-volume protector, and recovery-key escrow can create a second outage instead of restoring unattended startup.

manage-bde autounlock | BitLocker planning | BitLocker status

Native status interpretation

STATUS_FVE_NO_AUTOUNLOCK_MASTER_KEY is 0xC0210024, an NTSTATUS error value. AllStat describes it as “The auto-unlock master key was not available from the operating system volume. Retry the operation using the BitLocker WMI interface.”