Trusted Platform Module: How do I reset it?

Follow these instructions:

To clear your TPM, follow the steps below:

Go to Start > Settings > Update & Security > Windows Security > Device security. This will launch the Windows Defender Security Center.

Select Device Security again, and then under Security processor, select Security processor details.

On the next screen, select Security processor troubleshooting, and then under Clear TPM click on the Clear TPM button.

This will reset your security processor to its default settings.

Your device will need to restart before the process is complete.

Clear TPM using PowerShell

The Clear-Tpm cmdlet resets the Trusted Platform Module to its default state and removes the owner authorization value and any keys stored in the TPM.

Clear-Tpm

Hi PhaseSpaceAdministration,

There are several ways to clear the TPM:

• Clear the TPM as part of a complete reset of the computer: You might want to remove all files from the computer and completely reset it, for example, in preparation for a clean installation. To do this, we recommend that you use the Reset option in Settings. When you perform a reset and use the Remove everything option, it will clear the TPM as part of the reset. You might be prompted to press a key before the TPM can be cleared. For more information, see the “Reset this PC” section in Recovery options in Windows 10.
• Clear the TPM to fix “reduced functionality” or “Not ready” TPM status: If you open TPM.msc and see that the TPM status is something other than Ready, you can try using TPM.msc to clear the TPM and fix the status. However, be sure to review the precautions in the next section.

Precautions to take before clearing the TPM

Clearing the TPM can result in data loss. To protect against such loss, review the following precautions:

• Clearing the TPM causes you to lose all created keys associated with the TPM, and data protected by those keys, such as a virtual smart card or a login PIN. Make sure that you have a backup and recovery method for any data that is protected or encrypted by the TPM.
• Do not clear the TPM on a device you do not own, such as a work or school PC, without being instructed to do so by your IT administrator.
• If you want to temporarily suspend TPM operations and you have TPM 1.2 with Windows 10, version 1507 or 1511, you can turn off the TPM. For more information, see Turn off the TPM, later in this topic.
• Always use functionality in the operating system (such as TPM.msc) to the clear the TPM. Do not clear the TPM directly from UEFI.
• Because your TPM security hardware is a physical part of your computer, before clearing the TPM, you might want to read the manuals or instructions that came with your computer, or search the manufacturer's website.

Membership in the local Administrators group, or equivalent, is the minimum required to complete this procedure.

To clear the TPM:

1. Open the TPM MMC (tpm.msc).
2. If the User Account Control dialog box appears, confirm that the action it displays is what you want, and then click Yes.
3. Under Actions, click Clear TPM.
4. You will be prompted to restart the computer. During the restart, you might be prompted by the UEFI to press a button to confirm that you wish to clear the TPM.
5. After the PC restarts, your TPM will be automatically prepared for use by Windows 10.

If you would like me to provide additional advice, simply respond to this thread. I will get notified and I’ll reply to you as soon as I can.

Hi, I am always the owner of my PC since windows 7, now running windows 10 pro build 1803, I just started to have this error message to rest your security process (TPM) I did not performed this resetting as I am not sure what will happens or I may loose some settings? what shall I do now? any help is very much appreciated.