MS Excel: Introduction
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It's easy to lock and protect cells in Microsoft Excel to prevent users from changing data or formulas. This involves a two-step process …
In Microsoft Excel, errors are flagged with small green marker or triangle in the upper left corner of the cell. However, these indicators display when there may be an error but is, in fact, not an error.
You can password protect worksheets and workbooks in Excel. If you want to prevent other users from opening or modifying an Excel workbook, you can encrypt the file with a password. You can also protect workbook structure where you can prevent users from deleting, renaming, moving or unhiding worksheets. Password protection can be added to your Excel file in several ways.