I have a workbook with 4 columns containing lists of names from 4 different
workbooks pasted as links to a name list in each of those workbooks, one
list per workbook. I'm trying to compare those lists using Conditional
Formatting. Ideally each column's results will match, but if they don't, I
want to know which ones don't. If I select the entire range, is there a
formula I can use to turn non-matches red?

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David