Excel 2010 and 2013 make it possible not only to restore the unsaved workbooks, but also to recover previous versions of your document. It is especially helpful when you make a mistake that you can't undo, or when you want to see how the document looked like a few minutes earlier.f you want to know how to retrieve an overwritten Excel file, go ahead and read this article. 1  Excel AutoSave and AutoRecover. 2  How to recover unsaved files in Excel. 3  Recover overwritten Excel files. 4  How to save a backup copy of your workbook.
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