data loss

  1. U

    Unexpected Excel restore loses all modifications

    While editing, Excel restored the workbook and I lost all changes. Since Excel did not crash there was no recover file to retrieve the data. Has anyone seen this unexpected event before? This had never happened before while working with Excel for a long time and seemed to just start like some...
  2. S

    File error: data may have been lost

    I've been working on an Excel file with no problems. Then yesterday I opened it and got the error in the subject line. Certain - but not all - of the formulas in the workbook now simply contain "=#N/A". I fixed the formulas and re-saved it. I opened the file again today and got the same...
  3. M

    Data Loss when Excel is Reopened - #N/A in place of formulas

    When I reopened a large excel file, I received an error message that data was lost. In the file many formulas were converted to #N/A. Any idea how this happened? What can I do to prevent this from happening again? Thanks.
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