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Updating the BIOS on Dell Systems With BitLocker Enabled



Article Summary: This article advises on precautions when updating the BIOS on systems with BitLocker enabled and also what to do if after a recent BIOS update BitLocker experiences an issue.


Table of Contents :

  1. Updating BIOS (Bitlocker Enabled)
  2. Solution
  3. Updated BIOS and BitLocker is showing an error

1. Updating BIOS with Bitlocker

When updating the BIOS on a system with BitLocker < Enabled > please be aware of the below.

Caution: If BitLocker is not suspended, the next time you reboot the system it will not recognize the BitLocker key.
You will then be prompted to enter the recovery key to progress and the system will ask for this on each reboot.

If the recovery key is unknown this can result in data loss or unnecessary operating system re-install.


2. Solution

Note: If the BitLocker icon is not seen this could be down to restrictions put in place by system administrators. If this is the case contact your system administrator for assistance.

Method One: The easiest solution is to suspend BitLocker before updating the BIOS.

  1. Click Start

  2. Go to Control Panel > System and Security > BitLocker Drive Encryption

  1. Select Suspend Protection (you may be prompted to select yes to confirm this)

  2. You can now update the BIOS (latest can be downloaded from the Dell Support Website)

  3. Please see this Video Guide for help on updating the system BIOS.

  4. Or article How to update the BIOS on a Dell System

  5. After BIOS updated you can then Resume Protection

Method Two: Edit group policy for Bitlocker

  1. Click Start. In the Search box, type gpedit.msc and press Enter.

    Note: The system user must have administrator right to edit group policy.
  2. Local Computer Policy should be displayed, and options for Computer Configuration and User Configuration.

  3. Under Computer configuration, click Administrative Templates.

  4. Open Windows Components. click on Bitlocker Drive Encryption folder.

  5. In the right pane, click Configure TPM Platform Validation Profile.

  6. Double–click the Require additional authentication at startup policy. Set the policy for Disabled.

  7. Click Apply, then OK. Restart the system.

  8. Once BIOS is updated, repeat these steps and Re-enable Bitlocker.

Bitlocker Group Poilicy Editor


3. BIOS revisions causing an issue with BitLocker

The BIOS revisions listed below have been found to cause an error with BitLocker where it will not enable/resume when TPM is in TPM 2.0 mode. If you have recently updated your system BIOS to the version below please update again to the new version available on Dell Support Site to resolve the issue.

Note: It is recommended that you download and install the latest BIOS version from the Dell Drivers & Downloads website.

Platform

Affected BIOS Version

Latitude 7275

1.1.29

Latitude 5175/5179

1.0.22

Latitude 7370

1.11.4

Latitude E7270/E7470

1.14.3

Latitude E5270/E5470/E5570

1.13.3

Precision 3510

1.13.3

Precision 7510/7710

1.11.4

Caution: It is recommended that customers do not install a demoted BIOS, for any reason, even if they have a local copy. Always ensure that if a BIOS update is being carried out that the latest version is used.




Identifikátor článku: SLN153694

Dátum poslednej zmeny: 03/07/2018 06:32 AM


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