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Encrypt USB Drives in Windows 11 with BitLocker

Richard
Written by
Richard
Jul 22, 2021 Updated Apr 14, 2026 2 min read

This guide explains how to use BitLocker to protect your USB flash drives with a password in Windows 11.

Why use BitLocker? If you lose your USB drive, someone else could easily view your private files. BitLocker scrambles your data so that only people with the correct password can open it.

What happens when done? Your USB drive will be locked. Every time you plug it into a computer, you must type in your password to see your files.

Note: You will need administrative privileges to perform these steps.

Password-protect USB flash drives in Windows 11

You can manage your drives through the Windows Settings menu. To open it, press the Windows key + I on your keyboard or click Start > Settings.

Windows 11 Settings menu for accessing options

In the Settings window, click System and then select Storage.

Windows 11 Storage settings for managing drives

Find Advanced storage settings and click it to see more options.

Advanced storage settings in Windows 11

Next, click on Disks & volumes.

Windows 11 view of disks and volumes

Find your USB drive in the list. Click the small arrow to expand it, then click Properties.

Windows 11 disk and volume management interface

On the properties page, click the link to Turn on BitLocker.

Enabling BitLocker on an external drive in Windows 11

A new window will appear. Look for your drive under Removable data drive – BitLocker To Go and click Turn on BitLocker.

Turning on BitLocker To Go for USB drives

Type in a strong password and confirm it. You will need this password every time you use the drive.

Setting a password for BitLocker encryption

Windows will ask you to save a recovery key. This is very important! If you forget your password, this key is the only way to get your data back. Save it in a safe place.

Recover key file options for BitLocker in Windows 11

Follow the on-screen prompts and click Next.

BitLocker encryption options for USB drives

Choose the encryption method that fits your needs, then click Start Encrypting.

Starting BitLocker encryption process in Windows 11

Wait for the process to finish. This might take a few minutes depending on how large your drive is.

Progress of BitLocker encryption on USB drive

Once you see the message that encryption is complete, your drive is secure.

Completion message for BitLocker drive encryption

The next time you plug your drive into a computer, a box will pop up asking for your password.

Secure BitLocker external drive in Windows 11

Type your password to unlock the drive and access your files.

Password prompt to unlock BitLocker encrypted drive

Summary

BitLocker To Go is a built-in Windows tool that keeps your USB files safe from prying eyes. By setting a password, you ensure that only you can access your data. Remember to store your recovery key somewhere safe, as you will need it if you ever forget your password.

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Tags: #Windows 11
Richard

About the Author

Richard

Tech Writer, IT Professional

Richard, a writer for Geek Rewind, is a tech enthusiast who loves breaking down complex IT topics into simple, easy-to-understand ideas. With years of hands-on experience in system administration and enterprise IT operations, he’s developed a knack for offering practical tips and solutions. Richard aims to make technology more accessible and actionable. He's deeply committed to the Geek Rewind community, always ready to answer questions and engage in discussions.

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