Windows 11 Pro, Enterprise, and Education editions include BitLocker, a tool that encrypts the system drive to protect against unauthorized access. BitLocker requires a 48-digit recovery key for access if the device is compromised. A Trusted Platform Module (TPM) chip is necessary for BitLocker to function, which is standard in most computers made in the last eight to nine years. To enable BitLocker, users must open File Explorer, right-click the system drive, select "Turn on BitLocker," back up the recovery key, choose the encryption portion, and run a system check to start the encryption process.