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BitLocker Recovery Key Mismatch After Mainboard Replacement

Denis Stéphane Constant 0 Reputation points
2025-10-30T12:03:16.0033333+00:00

Hi Team,

I need your assistance with a critical issue for one of our customer accounts.

After replacing the mainboard on a ThinkPad notebook, I’m encountering a BitLocker encryption problem.

The Key ID displayed on the notebook is: E334DACD-XXXX-XXXX-XXXX-XXXXXXXXXXXX

However, the Key ID stored in the user’s Microsoft account is: 87f58e18-XXXX-XXXX-XXXX-XXXXXXXXXXXX

Please note:

  • The user is the sole owner of this notebook.
  • I have checked all associated Microsoft accounts, but no matching key was found.

I also searched for the Key ID E334DACD-XXXX-XXXX-XXXX-XXXXXXXXXXXin Azure, but received “No BitLocker Key found.” The other key (87f58e18-XXXX-XXXX-XXXX-XXXXXXXXXXXX) shows a recovery key backed up on 04/03/2024, while the notebook indicates 29/12/2022.

Could you advise on how to resolve this mismatch and recover access?

Your help is really appreciated as this is for one of our customer accounts.

Thank you in advance for your support.

Microsoft Security | Intune | Security
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  1. Prathista Ilango 1,065 Reputation points Microsoft Employee
    2026-03-25T18:24:31.32+00:00

    Hello Denis Stéphane Constant,

    Sorry you are running into this. Hope this is already sorted, if not, the following might give you some guidance.

    From what you’ve described, BitLocker can only be unlocked using the recovery key that exactly matches the Key ID currently displayed on the device. If the Key ID shown on the recovery screen does not match any of the recovery keys available in the Microsoft account or Entra ID, then those existing keys unfortunately won’t work for this prompt.

    If you haven’t already, it’s still worth double‑checking:

    • Any other Microsoft (personal) account that may have been used on the device

    • A work or school account, if the device was ever connected to one

    • On‑premises Active Directory, if applicable If the matching recovery key cannot be located in any of these locations, there isn’t a supported way to recover access to the encrypted data, and the remaining option would be to reset the device and reinstall Windows.
    Hope that helps!
    If you found the information above helpful, please Click Yes. This will assist others in the community who encounter a similar issue, enabling them to quickly find the solution and benefit from the guidance provided.

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