STEP1: Click the Microsoft Office Button, point to Prepare, and then click Encrypt Document.
STEP2: In the Encrypt Document dialog box, in the Password box, type a password, and then
- Keep your password in a safe place. If you lose or forget the password, it can’t be recovered.
- You can type up to 255 characters. By default, this feature uses AES 128-bit advanced encryption. Encryption is a standard method used to help make your file more secure.
STEP3: In the Confirm Password dialog box, in the Re-enter password box, type the password
again, and then click OK.
STEP4: To save the password, save the file.