Have you ever found yourself frustrated with an Excel workbook that seems to lag, break, or throw errors at the worst possible time? If so, there’s a good chance the culprit is one of Excel’s most ...

Use Excel data validation to prevent duplicate values in a column Your email has been sent Prevent duplicates before they happen by combining a simple function with data validation. Excel has built-in ...

For you advanced users who want to skip ahead: You apply the conditional formatting using a custom formula and some variation on the INDIRECT function. In addition to specifying the column and row, ...