Bitlocker - Win 10 - TPM 2.0 - Legacy Mode


  1. SebaSch82
    Posts : 1
    Windows
       New #1

    Bitlocker - Win 10 - TPM 2.0 - Legacy Mode


    Hi all, we are planing the rollout of Windows 10 in our company via SCCM. This will be done to new notebooks from Dell which have TPM 2.0 onboard and we want to use Bitlocker on them. Unfortunately Bitlocker could not be actived on them. On my researches I found out, that we have to install the notebooks in UEFI Mode. But this is not possible at the moment. So my question is: Does anybody know or have a clue if or how it is possible to use Bitlocker with Windows 10, TPM 2.0 and Legacy Mode?Thanks and best regards, Sebastian
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  3. sygnus21
    Posts : 5,899
    Win 11 Pro (x64) 22H2
       New #2

    Unfortunately I don't have an answer here, but I am curious as to why it's not possible to install Windows 10 under UEFI on those "new notebooks from Dell"? Especially if they come equipped with TPM 2.0 modules. Doesn't make sense to me.

    What am I missing?
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  4. lx07
    Posts : 5,478
    2004
       New #3

    According to here you need to boot in UEFI to configure bitlocker then you can change to CSM.
    • Boot in FULL UEFI mode (CSM Disabled from BIOS)
    • Partition disk
    • TPM magic + Pre-provision BitLocker
    • Apply Operating System
    • Change the BIOS Setting to CSM Enabled
    • Setup Windows & ConfigMgr
    Pre-Provision Bitlocker - TPM 2.0 - SCCM 1610
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