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Bitlocker recovery key keeps prompting at boot RRS feed

  • Question

  • I moved my hard disk to another laptop which had bitlocker configured. when it boots up it prompts me to enter key (expected). I enter key and log in.

    I run TPM.msc and select clear TPM. I then have to reboot, F1 to accept clear TPM - enter recovery key again. Log in win7, Prompted to reboot to Enable TPM, reboot, accept TPM enabled prompt, Enter recovery key again then log in to Win7. I thought that would be the process but every time I reboot it promtps me for the key again...

    Any idea what i'm doing wrong?

    Thanks

    Joe.


    Thanks - Joe.

    Thursday, August 9, 2012 2:38 PM

Answers

  • I found it - You have to enter 2 commands from a comand prompt to repopulate the TPM chip on the new laptop witht he recovery key.

    Manage-bde –protectors –delete C: -type TPM

    Manage-bde –protectors – add C: -tpm

    That done the trick.


    Thanks - Joe.

    • Marked as answer by Juke Chou Monday, August 13, 2012 7:32 AM
    Friday, August 10, 2012 7:51 AM

All replies

  • Hello!

    Why don´t you try connect the hard drive where it was originally when you activated the Bitlocker and once you´ve disabled it there you try again to connect it to your laptop? Maybe it could works :)

    Good luck! Manu.


    Si esta respuesta le ayudó a solucionar su problema puede marcarla. Esto ayudará a otros usuarios a resolver su mismo problema. Participante en news.lechado.com

    • Proposed as answer by RorymonMVP Friday, August 10, 2012 1:39 AM
    Thursday, August 9, 2012 10:32 PM
  • I would add...

    "A Trusted Platform Module (TPM) is a microchip that is built into a computer. It is used to store cryptographic information, such as encryption keys. Information stored on the TPM can be more secure from external software attacks and physical theft."

    So the TPM is in the original machine where you activated Bitlocker, so I think that maybe for this reason it is asking you the key and you can disable it... ;-)


    Si esta respuesta le ayudó a solucionar su problema puede marcarla. Esto ayudará a otros usuarios a resolver su mismo problema. Participante en news.lechado.com

    Thursday, August 9, 2012 10:36 PM
  • I found it - You have to enter 2 commands from a comand prompt to repopulate the TPM chip on the new laptop witht he recovery key.

    Manage-bde –protectors –delete C: -type TPM

    Manage-bde –protectors – add C: -tpm

    That done the trick.


    Thanks - Joe.

    • Marked as answer by Juke Chou Monday, August 13, 2012 7:32 AM
    Friday, August 10, 2012 7:51 AM
  • This actually worked, however i had to reboot the machine after the the first command.

    Thanks

    Tuesday, April 8, 2014 11:23 AM
  • Hi there,

    I have the same problem related bitlocker, every time I on my laptop it always ask me to enter recovery bit locker key.

    I have tried the method above however I didn't reboot the machine after first command, and not work.

    my question is :

    did you switch the bit locker to suspended mode first before you execute the command ? or the status of bitlocker = on ?

    Wednesday, May 11, 2016 9:08 AM
  • Excellent. Worked for me.

    Thanks you very much.

    Wednesday, July 20, 2016 11:27 AM
  • I updated BIOS and got the problem with Windows asking for Bitlocker key at boot - your solution worked for me as well. Thanks! :)
    Thursday, October 6, 2016 5:49 AM