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    Protect a worksheet to prevent data changes or password protect it to prevent other people from removing the sheet protection.
    Change or remove the protection or password of a worksheet, workbook, or a range of cells. You can also modify user permissions.
    Microsoft Excel provides several layers of security and protection to control who can access and change your Excel data: For optimal security, you should protect your ...
    In Office 2007, you can use password protection to help prevent others from opening, modifying, or deleting your Word, Excel and PowerPoint files.
    Help protect your account. Follow these tips to help keep your account safer and make it easier to recover if it's compromised.
    Learn how to password-protect your Xbox Live profile, have the Xbox 360 remember your password, and change the password protection on your profile.
    Learn how to help protect your computer from viruses, spyware, and other threats. Use Windows Security Center to check your security status.
    If you don’t want others to see or change your formulas, hide and protect them from being viewed in worksheet cells and in the formula bar at the top of the worksheet.
    If you want to limit how much others can edit or format a form, use the Restrict Editing command: Open the form that you want to lock or protect.
    Inside this course: Password protect your mailbox (1:35) We'll look at two sharing scenarios. First, at work and home, where people can protect their email with their ...

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