Highlighting duplicates

[t1o9n9y1]

I am trying to highlight duplicates across two columns. So when a selection from column A and a selection from column B occur more than once together in the table, they are then highlighted. I can get it to work with duplicated entries from a single column, but not from both.

So for example,

ABC	DEF
ABC	DEF
ABC	GHI
ABC	JKL

<tbody>
</tbody>

In this instance, only the top two rows should be highlighted. Is this possible at all?

Cheers for any help.

 

[Fluff]

Duplicate https://www.mrexcel.com/forum/excel...ional-formatting-post5210945.html#post5210945

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