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This article will show you, how to fix 'BitLocker could not be enabled, the BitLocker encryption key cannot be obtained' error in Windows 10.

When you enable BitLocker on operating system drive and your system is equipped with Trusted Platform Module (TPM), you can set a BitLocker PIN instead of password. We all know that a PIN provides better security as compared to traditional password.

But if there are some issues with TPM, BitLocker drive encryption would not work properly. Under such condition, following error appears, when you try to enable BitLocker on your Windows operating system drive:

BitLocker could not be enabled.

The BitLocker encryption key cannot be obtained from the Trusted Platform Module (TPM).
C: was not encrypted.

BitLocker Could Not Be Enabled, The BitLocker Encryption Key Cannot Be Obtained

Following factors may cause this issue on your system:

1. UEFI and secure boot is disabled.

2. You’ve TPM 2.0 installed and UEFI plus secure boot disabled.

3. TPM is outdated and requires update.

4. BIOS is outdated and requires update.

5. The disk is MBR partition style and requires GPT conversion.

If you’re also facing this problem, here is how you can solve it:

FIX: ‘BitLocker Could Not Be Enabled, The BitLocker Encryption Key Cannot Be Obtained’ In Windows 10

FIX 1 – General Suggestions

You can try below mentioned suggestions and see if they helps you:

1. Try to enable BitLocker via TPM.

2. Temporarily disable TPM in BIOS settings and try enabling BitLocker then.

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3. If you still want to go with TPM, update BIOS and TPM on your system, if there is an update pending.

4. Make sure you’ve latest Windows Updates installed.

If you still have the issue, refer FIX 2.

FIX 2 – Advanced Method

We strongly recommend you to create System Restore point and backup your data before trying below mentioned steps.

1. Press W8K + X keys and select Disk Management.

2. In Disk Management, right click on your operating system disk (not partition/volume) and select Properties. On the property sheet, switch to Volumes tab and check the Partition style. If it says Master Boot Record (MBR), we need to convert the disk to GUID Partition Table (GPT). If the disk is already GPT, no conversion required, you can directly go to step 4 below.

BitLocker Could Not Be Enabled, The BitLocker Encryption Key Cannot Be Obtained

3. So if your disk is MBR, you can use MBR2GPT tool available in Windows 10 V1703 or later to convert your disk to GPT without losing your data. Open administrative Command Prompt and type mbr2gpt /convert /allowFullOS and press Enter key.

BitLocker Could Not Be Enabled, The BitLocker Encryption Key Cannot Be Obtained

4*. Once the MBR to GPT conversion completed, restart your system and press F10 or F12 key (you can confirm this key from your device manufacturer) repeatedly to access one-time boot menu. Select Change Boot Mode Settings.

*This step may vary with your device. The aim here is enable UEFI boot mode with secure boot enabled.

BitLocker Could Not Be Enabled, The BitLocker Encryption Key Cannot Be Obtained

5*. Then change boot mode to UEFI Boot Mode, Secure Boot ON. Save these settings and reboot the machine.

BitLocker Could Not Be Enabled, The BitLocker Encryption Key Cannot Be Obtained

6. After you login, press W8K + R to open Run, type tpm.msc and click OK to open TPM Management snap-in.

BitLocker Could Not Be Enabled, The BitLocker Encryption Key Cannot Be Obtained

7. In TPM Management snap-in window, under Actions, click on Prepare the TPM option (refer screenshot below). If you’ve Prepare the TPM option greyed out, make sure TPM is enabled in BIOS.

BitLocker Could Not Be Enabled, The BitLocker Encryption Key Cannot Be Obtained

8. Try to enable BitLocker on operating system drive now and this time it should work without any error.

Hope this helps!


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Recent Comments

  • Heather : tried but it didn't fix my issue at all... the program was working fin...

    10 hours ago

  • Kapil Arya : ^^ Error 10016 won't crash your system. Can you try clean boot: https:...

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  • Jason : Hello, I have just followed your steps but 10016 still happening and ...

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  • Kapil Arya : ^^ Glad we could help 😎...

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  • oliver winternight : Hello Kapil - thank you so much for a very clear set of instructions. ...

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