Hi,
You've found an (annoying) issue with Excel that plagues many! You need to run some VBA on it (Visual Basic for Applications - e.g. aka a macro). A simple routine such as ...
Sub ExcelDiet()
Dim x As Long
Dim LastRow As Long
Dim LastCol As Long
Application.ScreenUpdating = False
LastRow = Cells.Find(What:="*", After:=Range("A1"), LookIn:=xlValues, _
LookAt:=xlPart, SearchOrder:=xlByRows, SearchDirection:=xlPrevious).Row
LastCol = Cells.Find(What:="*", After:=Range("A1"), LookIn:=xlValues, _
LookAt:=xlPart, SearchOrder:=xlByColumns, SearchDirection:=xlPrevious).Column
Range(Cells(1, LastCol + 1), Cells(65536, 256)).Delete
Range(Cells(LastRow + 1, 1), Cells(65536, 256)).Delete
Application.ScreenUpdating = True
End Sub
This particular code was written by DRJ and can be found here: http://www.vbaexpress.com/kb/getarticle.php?kb_id=83
The code in the link was written to do all sheets in the workbook. The link also has instructions, a description, how to steps and a downloadable example file. Another very quick method would be to download/install ASAP Utilities (www.asap-utilities.com) which has a routine for this. Very simple, very quick. A lot of additional 'goodies' are contained with that add-in as well.
Run this code (Alt + F11 --> Insert --> Module, paste on right, press F5 to run) to reset the lastCell in Excel.
HTH
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