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Cannot Enable Trusted Platform Module (TPM) as option is greyed out in BIOS

Summary: The page addresses an issue with the TPM (Trusted Platform Module) in the BIOS for using BitLocker on Dell Latitude 10/ST2 and Dell Venue 11 models

This article applies to This article does not apply to This article is not tied to any specific product. Not all product versions are identified in this article.

Symptoms

The article addresses an issue where users are unable to enable the TPM (Trusted Platform Module) in the BIOS for using BitLocker as it is greyed out on Latitude 10/ST2 and Venue 11 models.


Table of Contents:

  1. Cannot enable (TPM) Trusted Platform Module through the BIOS
  2. Enabling Trusted Platform Module Functionality

Cause

N/A

Resolution

1. Cannot enable Trusted Platform Module through the BIOS

Users may report the Trusted Platform Module (TPM) option in Windows 8 and 10 optimized BIOS is greyed out. The option is unable to be changed


2. Enabling TPM Functionality

Platform Trust Technology (PTT) is enabled on these systems by default, causing the TPM to be greyed out in the BIOS (Only one of these trust technologies can be enabled at a time). To enable TPM, PTT protection must be removed from the encryption keys.

To disable the PTT Protection and encrypt the hard drive through TPM:

  1. Suspend BitLocker if it has been initiated.

  2. Restart the system, and enter the BIOS

  3. Disable Secure Boot in the BIOS.

  4. Under Security Settings: Disable PTT, Enable TPM, Activate TPM, then save the changes

  5. Restart the operating system and enable BitLocker

BitLocker should be functioning on the TPM once this is complete.

This configuration is currently seen in the Dell Latitude 10/ST2 and Venue 11 designs. Future systems may also include this technology.

Additional Information

Affected Products

Venue 5130 Pro (64Bit), Venue 7140 Pro, Venue 7130 Pro/7139 Pro, Latitude 10e ST2E, Latitude 10
Article Properties
Article Number: 000128616
Article Type: Solution
Last Modified: 22 Jan 2024
Version:  6
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