A subset of laptops randomly prompt for a BitLocker recovery key on startup.
Root cause: A firmware update reset a BIOS setting, invalidating the TPM measurement.
Today
Keys handed out, cause unexplored.
Each prompt is treated as a one-off, so the same devices keep locking out repeatedly.
- Helpdesk provides the recovery key each time
- Recurs for the same users; escalates to L2
- L2 manually checks TPM/BIOS on a few machines
- After repeats, traces it to a BIOS setting
With eBlissAI
Firmware trigger found immediately.
The admin asks:
Why do these BitLocker prompts keep happening?- Reads TPM measurement state on every machine
- Reads BIOS/firmware configuration, too
- Identifies the firmware update that reset it
- Proposes correcting BIOS and re-sealing TPM
Admin approves; eBlissAI fixes the whole at-risk group
How eBlissAI kept it safe
Read-only investigation first. The admin saw the plan and the evidence before approving, and the change ran only within the guardrail layer, with every step recorded.
Outcome
Fix it fleet-wide. Stop the recurrence.
Lockouts stopped fleet-wide, before more occur.
Without eBlissAI
The cost of doing it by hand
Repeat lockouts, weeks of recurring tickets.
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Read the case →Have a problem like this?
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