In an enterprise environment the PCR settings are configured using Group Policy. if you normally boot from Hard Disk but need to boot from a CD/NIC/USB for some reason. This could be something as simple as choosing a different boot device at startup if not configured correctly based on the network requirements of your organization. Any changes to this state can cause the BitLocker recovery mode to kick in. When a machine is encrypted it stores the state of the BIOS/UEFI settings. If the check completes, the TPM chip will release the keys to allow BitLocker to boot the encrypted disk. Basically, these settings tell the TPM chip what to check, during the power-on cycle, that the disk is still booting inside a valid machine that hasn’t been tampered.
Windows bitlocker recovery key generator code#
Disabling the code integrity check or enabling test signing on Windows Bootmgr.Changing the usage authorization for the storage root key of the TPM to a non-zero value.Having a BIOS or an option ROM component that is not compliant with the relevant Trusted Computing Group standards for a client computer.Upgrading the motherboard to a new one with a new TPM.Moving the BitLocker-protected drive to a different system.Hiding the TPM from the operating system.Modifying the Platform Configuration Registers (PCRs) used by the TPM validation profile.Adding or removing add-in cards (such as video or network cards), or upgrading firmware on add-in cards.Turning off, disabling, deactivating, or clearing the TPM.Changes to NTFS partition table on the disk including: Creating, Deleting, Resizing primary partition.Docking or undocking a portal computer if the computer was (respectively) undocked or docked when BitLocker was turned on.Using a BIOS hot key during the boot process to change the boot order to something other than the hard drive.Failing to boot from a network drive before booting from the hard drive.
Windows bitlocker recovery key generator windows 10#
BitLocker has been a part of the Windows operating system since 2007 but Microsoft greatly enhanced BitLocker in Windows 10 version 1511, by introducing new encryption algorithms and making it possible to configure group policy settings separately for fixed data drives, removable data drives, and operating system drives.īitLocker authentication methods can trigger user lockouts.
BitLocker Drive Encryption, which is commonly referred to simply as BitLocker, allows Windows users to encrypt hard drives in an effort to keep data secure. Let’s start with an overview of BitLocker.