VBA Code to Highlight Difference in Columns in Excel

VBA code that you can use to highlight the differences between two columns in Excel.

VBA Code:

Sub HighlightColumnDifferences()
    Dim rng1 As Range, rng2 As Range
    Dim cell1 As Range, cell2 As Range
    ' Set the ranges for the two columns you want to compare
    Set rng1 = Range("A1:A10") ' Change "A1:A10" to the first column range
    Set rng2 = Range("B1:B10") ' Change "B1:B10" to the second column range
    ' Clear any previous formatting
    rng1.Interior.Pattern = xlNone
    rng2.Interior.Pattern = xlNone
    ' Loop through each cell in the first column
    For Each cell1 In rng1
        ' Loop through each cell in the second column
        For Each cell2 In rng2
            ' Compare the values in the two cells
            If cell1.Value <> cell2.Value Then
                ' Highlight the cells with differences
                cell1.Interior.Color = RGB(255, 0, 0) ' Change color as desired
                cell2.Interior.Color = RGB(255, 0, 0) ' Change color as desired
            End If
        Next cell2
    Next cell1
    ' Inform the user that the highlighting is complete
    MsgBox "Differences between the columns have been highlighted!"
End Sub

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