Automatically bitlocker Windows 10 MDM Intune Azure AD Joined devices

I recently ran into an article by Pieter Wigleven, based on an original idea of Jan Van Meirvenne that I simply have to share, and expand upon.

When you go cloud first, and do light MDM management of your Azure AD Joined Windows 10 devices, you will likely enable a Bitlocker policy in Intune. What you’ll quickly discover, is that your policy will not automatically enforce/enable Bitlocker on non-InstantGo capable devices.

So, I expanded upon Jan and Pieter’s script to automatically enable Bitlocker on Windows 10; it has additional error handling, local logging and it will eject removable drives prior to immediately (vs reboot) encrypting your system drive. After this is started, it will register your recovery key in AzureAD. Of course all credit for the original idea goes to Jan van Meirvenne.

Powershell source file

enableBitlockerAndRegisterInAAD.ps1 (right click, save as)

MSI file

enableBitlockerAndRegisterInAAD_v0.2.msi(right click, save as)

As Intune won’t let you deploy a Powershell script, I’ve also wrapped the script in an MSI file with Advanced Installer for you. What this will do;

  1. Deploy the PS1 file to the machine
  2. Register a scheduled task to run this PS1 file at logon each time
  3. Kick off the scheduled task once so a first reboot isn’t required

Advanced installer package (.aip)

enableBitlockerAndRegisterInAAD.zip (right click, save as)

Requirements

  1. Windows 10, AzureAD Joined
  2. TPM chip
  3. User should be local admin

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10 Comments on "Automatically bitlocker Windows 10 MDM Intune Azure AD Joined devices"

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gary chen
Guest

HI, i found that the MSI package only can encrypt the OS drive (C:), but can’t encrypt data drive (D:).

Berry van Bree
Guest

Hi Jos! When you use a provisioning package the “HKLM:SYSTEMCurrentControlSetControlCloudDomainJoinJoinInfo” key is filled with the ID of the package. Example: package_12335ea1-6666-555a-123a-773aadd4433@domain.com

In that case it will be impossible to write the key to AAD. I think this will also be the case when you use provisioning methods as Autopilot in the future.

John
Guest

Hi Jos! Can you send me the aip file for your msi? I have problem to create msi files thats works with intune and need to be run with higher privileges. Thanks!/John

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