To allow only authorized users to view or modify your data, you can help secure your entire workbook file with a password.
1Go to the File Menu, and click Save AsAd
2From the Tools menu, click Options.
- If you want users to enter a password before they can view the workbook, type a password in the Password to open box, and then click OK.
- If you want users to enter a password before they can save changes to the workbook, type a password in the Password to modify box.
- If you want to use a different encryption type, click Advanced, click the type you want in the Choose an encryption type list, and then click OK.
- If needed, specify the number of characters you want in the Choose a key length box.
4Wait to be prompted and then retype your passwords to confirm.
5Click Save As...
6Wait to be prompted and click Yes to replace the existing workbook.Ad
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- Document property encryption is enabled by default for most encryption types and providers. It prevents unauthorized users from viewing summary and custom file properties (such as the author or any custom file information) in the Properties dialog box.
- When users right-click the password-protected file, and then click Properties, information won't be available on the Summary tab and Custom tab. Authorized users, however, can open the file and view all file properties (File menu, Properties command).
- To disable document property encryption, clear the Encrypt document properties check box.
- Unlike passwords you specify in the Password to open box, passwords you specify in the Password to modify box are not encrypted. These passwords are only meant to give specific users permission to modify workbook data. For optimal password security, it's best to assign both passwords. An encrypted password to access the workbook, and one to provide specific users with permission to modify its content.
- Use strong passwords that combine uppercase and lowercase letters, numbers, and symbols. Weak passwords don't mix these elements. Strong password: Y6dh!et5. Weak password: House27. Use a strong password that you can remember so that you don't have to write it down.
Things You'll Need
- a computer
- Microsoft Office 2003