BitLocker activation issue on Windows 24H2 LTSC after running Sysprep

Question

Hi,

BitLocker activation issue on Windows 24H2 LTSC after running Sysprep.

We install Windows 24H2 LTSC (update to version 10.0.2610.2314)

SW_DVD9_WIN_ENT_LTSC_2024_64-bit_English_MLF_X23-70046.ISO

manage-bde -off C: (turn off bitlocker)

Sysprep (use Generalize), everything works without using the "generalize" option.

---

After sysprep try turn on bitlocker  and receive an error

Photo Attached

Need help

***Move from Windows / Windows 11 / Install and upgrade***

Answer 1

Hello,

Thank you for posting in Microsoft Community forum.

Based on the description, I understand your question is related to BitLocker activation issue on Windows 24H2 LTSC after running Sysprep.

Try run below commands to check disk error and then enable bitlocker again:

chkdsk C: /f /r

manage-bde -on C:

You can also use the BitLocker Repair Tool to attempt to recover the drive.

repair-bde C: X: -rp 

Replace X: with the drive letter of an empty USB drive where the recovered data will be saved.

You might also need to re-run Sysprep with the generalize option and ensure no pending updates or drivers are causing conflicts.

Have a nice day. 

Best Regards,

Molly

Answer 2

Hello, this has been tested with several computer models. The same issue occurs with all of them.

There is something wrong with Windows 11 LTSC.

Please review VIDEO and let me know what I might be doing wrong. Is this actually a Windows bug?

It is very important for me that everything works correctly.

Respectfully, Tomas

https://drive.google.com/drive/folders/1-c2d_UYw6ySr7xJKR0a6aoeDU2mgC5cI?usp=drive_link

Answer 3

I have the same issue. Windows Ver 24H2, 26100.2605. Just started last month. Sysprep'd disk cannot have Bitlocker activated. Destroys the boot partition.

Here's the Dispart reading pre and post sysprep(with bitlocker activated)

*************** Pre Sysprep ***********

C:\Windows\System32>manage-bde -status

BitLocker Drive Encryption: Configuration Tool version 10.0.26100

Copyright (C) 2013 Microsoft Corporation. All rights reserved.

Disk volumes that can be protected with

BitLocker Drive Encryption:

Volume C: []

[OS Volume]

Size:                 476.20 GB 

BitLocker Version:    None 

Conversion Status:    Fully Decrypted 

Percentage Encrypted: 0.0% 

Encryption Method:    None 

Protection Status:    Protection Off 

Lock Status:          Unlocked 

Identification Field: None 

Key Protectors:       None Found 

C:\Windows\System32>diskpart

Microsoft DiskPart version 10.0.26100.1150

***************************************************************************

Copyright (C) Microsoft Corporation.

On computer: DESKTOP-1K07F7L

DISKPART> list disk

Disk ### Status Size Free Dyn Gpt

---

Disk 0 Online 476 GB 1024 KB *

DISKPART> select disk 0

Disk 0 is now the selected disk.

DISKPART> list part

Partition ### Type Size Offset

---

Partition 1 System 100 MB 1024 KB

Partition 2 Reserved 16 MB 101 MB

Partition 3 Primary 476 GB 117 MB

Partition 4 Recovery 642 MB 476 GB

DISKPART> select part 3

Partition 3 is now the selected partition.

DISKPART> list vol

Volume ### Ltr Label Fs Type Size Status Info

---

* Volume 0 C NTFS Partition 476 GB Healthy Boot

Volume 1 FAT32 Partition 100 MB Healthy System

Volume 2 NTFS Partition 642 MB Healthy Hidden

********************** POST Sysprep with Bitlocker activated. **********

Size: Unknown GB

BitLocker Version:    2.0 

Conversion Status:    Unknown 

Percentage Encrypted: Unknown% 

Encryption Method:    XTS-AES 128 

Protection Status:    Unknown 

Lock Status:          Locked 

Identification Field: Unknown 

Automatic Unlock:     Disabled 

Key Protectors: 

    TPM 

    Numerical Password 

X:\Windows\System32>diskpart

Microsoft DiskPart version 10.0.26100.1

Copyright (C) Microsoft Corporation.

On computer: MININT-43FFEQB

DISKPART> list disk

Disk ### Status Size Free Dyn Gpt

---

Disk 0 Online 476 GB 1024 KB *

DISKPART> select disk 0

Disk 0 is now the selected disk.

DISKPART> list part

Partition ### Type Size Offset

---

Partition 1 System 100 MB 1024 KB

Partition 2 Reserved 16 MB 101 MB

Partition 3 Primary 476 GB 117 MB

Partition 4 Recovery 642 MB 476 GB

DISKPART> select part 3

Partition 3 is now the selected partition.

DISKPART> list volume

Volume ### Ltr Label Fs Type Size Status Info

---

* Volume 0 Unkno Partition 476 GB Healthy

Volume 1 FAT32 Partition 100 MB Healthy Hidden

Volume 2 D NTFS Partition 642 MB Healthy Hidden

Answer 4

Hello,

Any update? Or Workarounds.

We have the problem now on multiple Devices.

After sysprep -generalize -oobe (which we use to create a image for multiple Devices) you can't activate Bitlocker or it boots into Automatic repair Mode.