Q. Help! I have been working on a very important Excel file for a client, and suddenly my computer locked up and says, “Excel is not responding.” Is there anything I can do so that I don’t lose all of ...

Microsoft Excel has several features designed to help you recover unsaved versions of files and prevent data loss.

If you have sensitive data you'd like to keep from prying eyes in a Microsoft Excel file, the easiest way to protect it is with Excel's built-in password tools.