Dear Lee Jin,
Thank you for your question and for sharing the details into Microsoft Q&A Forum.
Seeing multiple BitLocker recovery keys in your Microsoft account can happen if BitLocker/Device Encryption was enabled and disabled multiple times after certain changes or because each encrypted volume (C:, D:, external/USB, etc) has its own recovery key, turning BitLocker off for one volume doesn’t automatically turn it off for others. If you plan to clean up old keys, please proceed carefully, especially because each encrypted volume has its own key. Before proposing any steps, please first review the Independent Advisor’s reply you referenced, it’s accurate and worth following. Additionally, the steps below may help.
- Verify which volumes are still encrypted
Windows 11 Home: Settings > Privacy & security > Device encryption or
- Run
manage-bde -statusin Command Prompt to see per‑volume status.
- Match the correct key
On any BitLocker prompt, note the Recovery Key ID (first 8 digits) and match it with the entry on your Microsoft account’s keys page.
3. Delete only keys you no longer need
- Go to your BitLocker recovery keys page > ⋯ (More options) > Delete. This removes the online backup only (it doesn’t decrypt a drive).
4. Keep a safe backup before deleting
- I recommend maintaining an offline copy (USB/print/file) of any recovery key you might need later.
For more information, please visit: BitLocker recovery overview and BitLocker recovery process
I hope this helps you manage your BitLocker keys carefully, avoid accidental deletion, and maintain a streamlined, secure setup for your Windows 11 device.
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