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「Microsoft Excel」XP/2003/2007用“OpenDocument”対応アドインのβ版が公開

「Microsoft Excel」（以下、「Excel」）XP/2003/2007で“OpenDocument”形式の文書を読み込み・保存できるアドイン「ODF Add-In for Excel ...
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Excel cannot open the file because the file format or extension is not valid

If you cannot open the Excel file from its location, simply open any Excel file and click the File tab. Then, go to Open > Browse and select the file giving error ...