Leaking secrets Two types of TPM hardware-based discrete TPM (dTPM) and firmware-based TPM (fTPM) are used to protect BitLocker’s Volume Master Key (VMK), the key that decrypts. If device encryption is turned off, select Turn on. Han explained how the tool BitLeaker, built for Windows 10, can leverage a vulnerability in the ACPI S3 sleeping state to bypass full disk encryption. If Device encryption doesn't appear, it isn't available. Select the Start button, then select Settings > Update & Security > Device encryption. ![]() For more info, see Create a local or administrator account in Windows 10. Boot from BIOS settings in order to boot from the USB. If the EFI USB Device not shown, you have to enable the USB boot support and to disable the Secure. Select the EFI USB Device option to boot from it. Click on Skip this device option and then select Use a Device option. The linked page will display your BitLocker recovery keys, with the device name and key upload date. Sign in to Windows with an administrator account (you may have to sign out and back in to switch accounts). Press ESC key to open Advanced Recovery menu. First up, head to the BitLocker Recovery Key page in your Microsoft Account. If the value says Meets prerequisites, then device encryption is available on your device. Or you can select the Start button, and then under Windows Administrative Tools, select System Information.Īt the bottom of the System Information window, find Device Encryption Support. In the search box on the taskbar, type System Information, right-click System Information in the list of results, then select Run as administrator. To see if you can use Windows device encryption If your device doesn't support BitLocker, you may be able to use Windows Device Encryption instead. For more info see Back up your BitLocker recovery key. It only takes a few moments to back up your recovery key. If you don't have that key, you won't be able to access the drive, and Microsoft support doesn't have access to the recovery keys either so they can't provide it to you, or create a new one, if it's been lost. If BitLocker thinks an unauthorized user is trying to access the drive it will lock the system and ask for the BitLocker recovery key. If you have BitLocker turned on for your device, it's important to be sure you have the Recovery Key backed up somewhere. It isn't available on Windows Home edition. ![]() If the signed in account isnt an administrator account, you must provide administrative credentials. In the BitLocker Drive Encryption dialog, select Reset a forgotten PIN. ![]() From the BitLocker Control Panel applet, expand the drive and then select Change PIN. Note: You'll only see this option if BitLocker is available for your device. Unlock the device using the recovery password.
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