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

With the right tools, you can save time by previewing a variety of files in Windows 10 or Windows 11 without opening their applications.

How to Get Excel to Prompt When Opened for Read or Write. Microsoft designed Excel with an optional feature that prompts users to view a workbook in a read-only mode and save edits under a ...

Need to look at invisible files and show hidden file extensions in Windows? Here's how to reveal them.