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What to do if BitLocker fails to encrypt the drive

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AOMEI Partition Assistant

Safe all-in-one partition assistant to clean partitions, or recover, resize, optimize, or move them, depending on your needs.

1.2 Clear the partition manually

  1. Type cmd in the Windows search tab and click on Run as administrator to launch Command Prompt as an administrator.

  2. Type diskpart, and hit Enter.diskpart

  3. Enter list disk to show a list of all drives.list disk

  4. Enter select disk #  (where # is the problematic drive) and hit Enter.

  5. Type clean and hit Enter.

  6. Wait until the drive is cleaned. Now, it’s time to create a new partition.

  7. Typecreate partition primaryand hit Enter

  8. Type assign letter = # (Once again, # is the letter you want to use).

  9. Format your partition by typing format fs=ntfs quick and hit Enter.

The manual process can be tricky so proceed with extreme care and follow it to the letter. If you’re not experienced, you should go with the software recommended above.

2. Change the Security Chip settings

  1. Start your machine and open the BIOS setup.

  2. Go to the Security tab and select Security Chip settings.

  3. Select the Discrete TPM option.

  4. Go to Clear Security Chip and save your changes.

  5. Restart your machine, log in, and enter your PIN. Check if the issue persists.

According to reports, it seems this issue affects machines equipped with Intel PTT Security Chips using particular settings.

Namely, when the issue occurred, the BitLocker Drive Encryption used TPM and PIN, and the Allow BitLocker without a compatible TPM option was turned off.

Also, the machines were running the OS in BIOS, not UEFI. We listed the general steps to follow above. Keep in mind that they may vary on your machine.

If you want to reverse the action, you need to replace the firmware’s boot capability with UEFI boot. Sometimes, you may also need to reinstall the OS.

In case you cannot arrive at a fix, we strongly recommend you to switch to using the software below, which is a powerful encryption tool.

Its wide range of security features includes copying encrypted lockers to the USB drive, CDs, DVDs, and even email attachments, as well as the possibility to upload your encrypted files to a cloud server.

Get Folder Lock

3. Enable BitLocker without a compatible TPM

  1. Open Run from Start button, write gpedit.msc,and hit OK.

  2. It will open the Local Group Policy Editor.

  3. Click on Administrative Templates from Computer Configuration and then on Windows Components.

  4. Select BitLocker Drive.

  5. Go to Encryption and then to Operating System Drives.bitlocker operating system drives

  6. Double-click on Require additional authentication at startup.bitlocker Require additional authentication startup

  7. In the new window, select Enabled and Allow BitLocker without a compatible TPM (requires a password or a startup key on a USB flash drive).bitlocker Require additional authentication startup

  8. Save the changes by hitting Apply.

  9. Now try to encrypt your drive by using BitLocker.

Enabling BitLocker from the Group Policy Editor without TPE can solve this problem quickly so make sure you try it by using the steps above.

4. Clear the TPM (Trusted Platform Module)

  1. Open Run from Start button, write tpm.msc, and press Enter.load management console windows 10

  2. A new management console will open.

  3. Under the Action tab, on the right, press Clear TPM.TPM trusted Platform Module

  4. In the Clear TPM Security Hardware box, the simplest solution is to check I don’t have the owner password and click OK.

  5. You will be asked to reboot. It will indicate that you should press a key (usually F10) in order to clear the TPM.

  6. Once the system reboots, you will be prompted to press a key (usually F10) to enable TPM. Press that key.

  7. The TPM Setup wizard will start for you to enter a TPM owner password.enter TPM owner password

Note icon

Note: Before starting to clear TPM settings, please make sure that you backed up your computer, as mentioned in the first solution. This method may result in data loss.

5. Change the settings of USB devices in BIOS

  1. Enter the BIOS setup utility (Consult the manual from the manufacturer to learn how to do that for your specific model).

  2. Go to Advanced, then Peripheral Configuration.

  3. Access USB Host Controller and USB Devices.

  4. The setting of the USB Devices should be All.USB Host controller BIOS

This solution applies when BitLocker fails to encrypt the operating system drive using a USB startup key. The cause of it can be related to some settings in BIOS mode.

We hope that these solutions helped you to fix your BitLocker encryption problems. If you’ve got additional tips and suggestions, feel free to list them in the comments section below.

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