You can make Excel always open old spreadsheets in Protected View. Enable or disable Protected View using in-built setting, Group Policy, Registry.

Want to open old PowerPoint presentations in Protected View? Enable this setting in PowerPoint Options, Group Policy, and Registry.

How to Open a Password-Protected PDF File To check if your PDF is indeed password-protected, open it with any PDF viewer, and it will prompt you to enter a password.

With the Excel file open select File in the top-left corner of the screen, followed by Info. Select Protect Workbook, then choose Encrypt with Password.

Sending important documents? Learn how to password protect PDFs for extra security using easy steps with Adobe Acrobat and free online tools.

If the file names provide sensitive information, a thief could take advantage of that. Of course, they would not be able to open any of the files without the password.

Write-protected CDs are designed to have files copied to them only once. Blank write-protected CDs are identified as CD-R discs. Using the default options in Windows, once you copy files to a CD-R ...

Knowing how to password protect a folder on your Mac can help keep your files safe and secure. To create a protected folder on your Mac, you can turn your folder into a disc image, which is easier ...

Learn how to hide or encrypt specific files in Windows in order to better protect them.