Newbie's guide to Windows BitLocker: Why you need it and how to set it up

Essential security for your Windows PC's files. Here's everything you need to know.

- CHRIS HOFFMAN

BitLocker is a crucial Windows feature that helps secure the data on your PC. The full version of BitLocker is only available on Windows 11 Pro, but you can still use it to a lesser degree on Windows 11 Home. (In fact, it's one of the best reasons to choose Windows 11 Pro over Home, fave.

co/4h0j2wQ.) So whether you're on Windows 11 Pro or Home, if you aren't using BitLocker yet, you should definitely start. Here's everything you need to know about BitLocker and how to get it set up right now.

WHAT IS BITLOCKER?

BitLocker is a secure disk encryption solution that's built into Windows 11. When your PC uses BitLocker encryption, it stores all the files on its internal storage device in encrypted form (fave.co/4gbC1b3).

Modern Windows PCs normally save the necessary decryption key to the PC's Trusted Platform Module (TPM) for safekeeping (fave.

co/3IT7AOK). When you log in and authenticate, the TPM releases the decryption key and you're able to use your computer as normal. The TPM also checks that your PC hasn't been tampered with before it releases the decryption key. Since your files are stored in encrypted form, a thief who steals your laptop won't be able to access them without logging in as you. No one can open up your laptop, take the drive out, and pry into your data—your files would appear scrambled without the decryption key.

WHY YOU NEED BITLOCKER ON YOUR PC

BitLocker ensures that only you (or someone with whom you've shared your BitLocker recovery key) can access the files on your PC.

It's a huge deal for businesses who want to make sure that confidential data on company systems can't easily be viewed by anyone. But it's also useful security for home PC users-especially laptop users-just in case someone happens to get their hands on your PC.