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Convert and Open unsupported file formats into Excel 2010.
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Note: Excel cannot open password protected workbooks created in the older formats.
Converting and Opening Unsupported File Formats
While there are file converters out there, the most common way to get an unsupported file format into Excel is:
Note: XLS will retain formulas, CSV will not.
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Article ID: 2671933 - Last Review: October 25, 2012 - Revision: 8.0