Windows 11 can create ZIP files, but it can’t add a password to them. To password-protect a ZIP file, install the free 7-Zip app. Right-click the files or folder, choose Show more options > 7-Zip > Add to archive, set Archive format to zip, type a password under Encryption, choose AES-256, and click OK. Anyone who opens the ZIP file will need the password to extract the files.
Here’s the full process, how to open a protected ZIP, and what to know about ZIP encryption.
How to password-protect a ZIP file with 7-Zip
- Download and install 7-Zip from 7-zip.org.
- Select the files or folder you want to protect, then right-click them.
- Click Show more options, then 7-Zip > Add to archive. (7-Zip may also appear in the main Windows 11 menu.)
- Set Archive format to zip.
- Under Encryption, enter and re-enter a strong password.
- Set Encryption method to AES-256.
- Click OK.
After creating the protected ZIP, delete the original unprotected files if you don’t want them on your PC.
ZIP or 7z?
| ZIP with AES-256 | 7z with AES-256 | |
|---|---|---|
| Opens on other computers | Most, but Windows’ built-in tool can’t open AES-encrypted ZIPs | Needs 7-Zip or a compatible app |
| Hides file names | No | Yes, with Encrypt file names checked |
| Compression | Good | Usually better |
If the recipient doesn’t have 7-Zip, the ZipCrypto method opens in Windows’ built-in tool, but it’s much weaker. Use AES-256 for anything sensitive.
How to open a password-protected ZIP
- Right-click the ZIP file and choose 7-Zip > Extract Here or Extract files.
- Enter the password when asked.
Tips for sharing protected ZIP files
- Use a long password, like a phrase of several random words.
- Send the password separately, such as by text message, not in the same email as the file.
- Remember that file names inside a ZIP are still visible. Use the 7z format if names are sensitive.
Other ways to protect files on Windows 11
- BitLocker or device encryption protects your entire drive.
- Password-protect a folder with an encrypted archive or other tools. See how to password protect a folder in Windows.
- Office files can be password-protected directly in Word or Excel under File > Info > Protect Document.
Frequently asked questions
Can I password-protect a ZIP in Windows without extra software?
No. Windows’ built-in Compressed Folders feature doesn’t support passwords.
What if I forget the password?
There’s no way to recover it with AES-256 encryption. Store your password safely, like in a password manager.
Is 7-Zip safe and free?
Yes. It’s free, open-source software. Download it only from 7-zip.org.
Does this work on Windows 10?
Yes. The steps are the same, except you won’t need Show more options.
Kermit Matthews is a freelance writer based in Philadelphia, Pennsylvania with more than a decade of experience writing technology guides. He has a Bachelor’s and Master’s degree in Computer Science and has spent much of his professional career in IT management.
He specializes in writing content about iPhones, Android devices, Microsoft Office, and many other popular applications and devices.