This will apply this formula to the whole column and you won’t receive a #DIV/0! in any of the cells in a column. In a similar manner, you can also use the ISERROR function.

To pinpoint duplicate entries, apply Excel's conditional formatting feature: Open the Excel worksheet containing the data in question. Select the column or range you want to inspect for duplicates.

Creating a list of duplicate values that’s separate from the data source is easier than ever thanks to Microsoft Excel's FILTER() function.