Can't get Bitlocker to encrypt C: drive Solved

  1. Posts : 4
    Windows 10 Pro

    Can't get Bitlocker to encrypt C: drive


    Windows 10 1903 on a Dell XPS 8700, no TPM. Did a clean install of Win 10, can't make Bitlocker encrypt. Have done this at least twice before, once on this computer (It worked fine. I wiped hard drive, installed Linux, coming back to Win 10. Also encrypted a laptop with TPM).

    Tried all setup combinations I could think of, entered password, restarted, eventually getting this error message:

    Click image for larger version. 

Name:	BitlockerNotEnabled.jpg 
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    Not sure I did this image right. It says this:

    Bitlocker could not be enabled
    The data drive specified is not set to automatically unlock on the current computer and cannot be unlocked automatically.
    C: was not encrypted

    Any suggestions would be appreciated.

      My ComputerSystem Spec

  2. sbh7600's Avatar
    Posts : 146
    Windows 10 - Ver: 1809 - Build: 17763.737

    Hello and welcome @sbumgarner,

    I think the solution is to disable TPM (
    Trusted Platform Module)
    if your computer dosn't have such a chip?

    see: How to Encrypt Drive C: with BitLocker in Windows 10 Pro & Enterprise. - - Windows Tips & How-tos
      My ComputerSystem Spec

  3. Posts : 4
    Windows 10 Pro
    Thread Starter

    Thanks for the reply. I followed all those instructions . . . restarted, did not get the screen asking for my password. Instead got the message I mentioned.
      My ComputerSystem Spec

  4. sbh7600's Avatar
    Posts : 146
    Windows 10 - Ver: 1809 - Build: 17763.737

    Did you enable the option as well, i just tried it. And i can encrypt my C dreve
      My ComputerSystem Spec

  5. Posts : 4
    Windows 10 Pro
    Thread Starter

    Thanks. I understand. Yes, followed all instructions. I've done this twice before, successfully. Something unusual is going on here. I just don't know what it is. Don't know the meaning of the error message I got, but had not seen it before this encryption effort.

    If my company didn't require it, I'd just run it without encryption. (:

      My ComputerSystem Spec

  6. bro67's Avatar
    Posts : 7,335
    Mac OS Mojave

    Did you reset Secure Boot settings in your bios?
      My ComputersSystem Spec

  7. Posts : 4
    Windows 10 Pro
    Thread Starter

    Thanks for your reply. I have not looked at the BIOS settings. Have not changed the BIOS since I originally encrypted the drive a couple of years ago, and it worked fine then, but it's worth a look.

    I'll take a look at the settings when I'm in my office again and report back.

    - - - Updated - - -

    OK. Looked at BIOS, enabled Secure Boot and UEFI, computer would not boot. Went back to Legacy Boot and UEFI disabled. Booted.

    Went though Bitlocker setup again, this time at final stage, unchecked "Run Bitlocker system check," and encryption started. Tomorrow I'll see if I have created other problems. If so, probably next step is to wipe the hard disk and start over.


    - - - Updated - - -

    Final post: What I did above worked. Drive is encrypted. When I restarted, I got the expected blue screen asking for my password. So all is well . . . at least so it seems.

    Thanks to those who offered suggestions. I appreciate your input so much!

      My ComputerSystem Spec

  8. sbh7600's Avatar
    Posts : 146
    Windows 10 - Ver: 1809 - Build: 17763.737

    Great you got it working
      My ComputerSystem Spec


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