[KB7191] Using BitLocker and ESET Endpoint Encryption Full Disk Encryption at the same time

Check if BitLocker is turned on

To check if you have any volumes have BitLocker Device Encryption turned on, open an elevated Command Prompt and type the following command:

manage-bde -status

Figure 1-1

In the screenshot above, BitLocker has fully encrypted the C:\ volume. In order to use ESET Endpoint Encryption FDE, you must decrypt the C:\ drive first.

You can also see the history of BitLocker by opening a PowerShell command line and typing the following:

Get-WinEvent @{logname='system';ProviderName='Microsoft-Windows-BitLocker-Driver'}

The screenshot below shows an example of this.

Figure 1-2

Remove BitLocker

Method 1: Using the Command Line

If your C:\ volume (or any other volumes) is encrypted with BitLocker as displayed above, then you can decrypt it by following these steps:

1. Open an Elevated Command Prompt.
    
2. Type the following command:
   
   manage-bde -off C:
   

   Decrypt each drive individually

   If multiple volumes are encrypted with BitLocker, then you will need to decrypt each volume individually.

3. BitLocker will begin decrypting the selected volume. Once decryption is complete, update the Workstation Details and try to start FDE with ESET Endpoint Encryption again. See I made changes to my client workstation, how do I update the ESET Endpoint Server of this?

For more information, see the following Microsoft article: https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/manage-bde-off

Method 2: Using Windows 10 (1809 and later)

Use the Settings interface to turn off BitLocker Device Encryption by following the instructions below:

1. Open Windows Settings by pressing Windows key + i.
    
2. Click Update & Security.
    
3. Click Device encryption at the bottom of the left-hand menu.
    
4. Click Turn off.

Figure 2-1

5. Click Turn off again to confirm.

Figure 2-2

6. Wait for the decryption process to finish.

Figure 2-3

7. After decryption is finished, update the Workstation Details and try to start FDE with ESET Endpoint Encryption again. See I made changes to my client workstation, how do I update the ESET Endpoint Server of this?