Could the problem be that some people have Windows set to display file extensions and other's don't?
By the way, the code could be tidied up a bit.
Actually that might help with the original problem because it doesn't involve referring to workbooks with their names.ThisWorkbook.Sheets("Temp").Cells.ClearContents Set wbSrc = Workbooks.Open (Filename:="sourceofcopy.xlsx") wbSrc.ActiveSheet.Cells.Copy ThisWorkbook.ActiveSheet.Range("A1") Application.CutCopyMode = False wbSrc.Close
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