Require a password to open or modify a file

When you create a password, write it down and keep it in a secure place. If you lose the password, you cannot open or gain access to the password-protected document.

1. Open the file.
2. On the Tools menu, click Options, and then click Security.
3. Do one of the following:

   Create a password to open

   1. In the Password to open box, type a password, and then click OK.
   2. In the Reenter password to open box, type the password again, and then click OK.

   Create a password to modify

   1. In the Password to modify box, type a password, and then click OK.
   2. In the Reenter password to modify box, type the password again, and then click OK.

Tip

To create a long password ù up to 255 characters ù click Advanced, and select an RC4 encryption type.