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Copper Contributor

Oct 10, 2023

Bitlocker encryption

Hi, We have enabled Bitlocker using Intune and used AES 256bit XTS. But when we run manage-bde -status it says the encryption method is XTS-AES 128. Any suggestions on this? Is it a potential Bu...

Harm_Veenstra
Oct 18, 2023
Ok, but if you want the intune clients to also have 256Bit... Then you will have to decrypt them and encrypt them again to fix that

MVP

Any update?

Copper Contributor

Oct 17, 2023

Hi Harm, Sorry for the delayed response. We encrypted the devices straight with AES 256bit XTS and never used 128 XTS.
This was done using Endpoint Manager.
Devices managed by Intune says 128Bit.
Devices not managed by Intune says 256bit.

Harm_Veenstra
MVP
Oct 18, 2023
Ok, but if you want the intune clients to also have 256Bit... Then you will have to decrypt them and encrypt them again to fix that
- Kashish_Goyal
  Copper Contributor
  Oct 18, 2023
  Thanks Harm... Do you have like a documentation or procedure to decrypt Bitlocker. I have done some research, could not get to a point.
  
  Thanks
  - Harm_Veenstra
    MVP
    Oct 18, 2023
    Kashish_Goyal The Easiest to decrypt a 128Bit drive is to push out a script like this:
    $BLV = Get-BitLockerVolume Disable-BitLocker -MountPoint $BLV
    This decrypts your Bitlocker volume, push this out to a group of computers. But... Exclude that group of computers of Configuration Profiles for encryption and Compliance things because that group won't be compliant anymore. After decryption, you can remove the computer from the group so that it receives the settings again and can be compliant again.

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