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Encrypting a Zip File

Please read about encryption before using this feature.

To encrypt or re-encrypt all of the files in an open WinZip® file (.zip or .zipx):

Using the WinZip ribbon interface

  1. In the main WinZip window, select all of the files in the WinZip file (Ctrl+A is a handy keyboard shortcut).
  2. In the Tools tab, click Selected Files.
  3. Check Encrypt Files and click OK.
  4. In the Encrypt window, enter the password in the Enter password and Re-enter password (for confirmation) fields and then click OK.

The type of encryption that is used depends on the encryption settings in the Settings tab.

Using the Legacy Toolbar interface

  1. Choose Encrypt from the Actions menu.
  2. WinZip will ask for a password and encryption method and then encrypt all of the files currently in the Zip file.

Any files in the Zip file that are already encrypted must first be decrypted before they are re-encrypted using the method and password you specified. WinZip will first try to decrypt the files using the current encryption password; if a file cannot be decrypted with this password, WinZip will ask you for the correct decryption password. If you are unable to supply the correct password, the file will be skipped, and it will remain unchanged in the Zip file.


  • It is more efficient to encrypt files while they are being added to the Zip file than to encrypt them after they have been added.
    • If you are using the WinZip ribbon interface, enable the Encrypt button in the Create/Share or Edit tab before adding files.
    • If you are using the Legacy Toolbar interface, to encrypt files while adding, simply check the Encrypt added files checkbox in the Add dialog.
  • You can also perform this action from the My Computer or Windows Explorer shortcut menu. Simply right click the Zip file and choose Encrypt from the WinZip shortcut menu.
  • This feature is available only for Zip files.

See also

About Encryption

Using Encryption

Password Policy in your WinZip configuration